-
1 test head
Большой англо-русский и русско-английский словарь > test head
-
2 test head
-
3 test head
1) Морской термин: напор при гидравлическом испытании2) Техника: опрессовочная головка3) Космонавтика: экспериментальная головная часть4) Метрология: измерительная головка5) Макаров: отпрессовочная головка6) Нефть и газ: испытательная головка -
4 test head
Англо-русский словарь нефтегазовой промышленности > test head
-
5 test head
• testauspää -
6 Test head
-
7 test head
-
8 test head
-
9 test head
n експериментальна головна частина -
10 Marshall cylindrical test-head
English-German dictionary of Architecture and Construction > Marshall cylindrical test-head
-
11 head
3) верхняя часть; верхний элемент (конструкции, аппарата)4) передняя часть ( конструкции)5) головная часть (напр. тоннеля, слитка)6) штрек7) мн. ч. руда, поступающая на обогатительную фабрику8) метал. прибыль9) замочный камень ( свода печи)10) дека ( сотрясательного стола)13) пробка ( разливочного ковша)14) гидр. головное сооружение15) оголовок (напр. контрфорса)16) верхний бьеф17) высота столба ( жидкости); напор18) высота (сооружения, конструкции) в свету19) насадок; патрубок20) насадка; сопло22) дно, днище (бочки, барабана); верхнее днище ( резервуара)23) мн. ч. головная фракция, головной погон24) продвижение25) направление26) интервал ( на транспорте)27) англ. крыша ( автомобиля)29) крышка цилиндра ( поршневого насоса)30) мор. носовая часть, нос31) барабан (напр. якорного шпиля)35) ригель; верхний брус ( рамы)37) вчт. первый элемент списка38) вчт. дескриптор40) рекордер42) кипа (напр. джута, пеньки)43) пищ. сливки45) швейн. верхняя подушка ( гладильного пресса)46) заголовок, "шапка"; рубрика•to barb bolt head — заёршивать головку болта;to expand rivet head — раздавать головку заклёпки;head of culvert — оголовок водопропускной трубыhead of delta — вершина дельты рекиhead of dock — голова докаhead of pile — наголовник сваи-
accumulator-type felling head
-
adiabatic head
-
adjustable boring head
-
air-floating head
-
airspeed head
-
anamorphic head
-
angular head
-
antifoam still head
-
aquifer pressure head
-
aquifer head
-
armature head
-
arrow head
-
assembling head
-
attachment head
-
audio head
-
auger-drill head
-
automatic arc-welding head
-
available head
-
axe head
-
ball-and-socket head
-
band head
-
banner head
-
barrel head
-
beetle head
-
binding head
-
blow head
-
blowpipe head
-
boiler head
-
bolt head
-
boom head
-
boring head
-
boring-and-facing head
-
brake head
-
breakwater head
-
buffer head
-
bull head
-
bumped head
-
buoyancy head
-
cable distribution head
-
cable head
-
camera head
-
capstan head
-
carding head
-
casing head
-
cassette head
-
casting head
-
cementing head
-
cementing plug dropping head
-
chain saw felling head
-
chimney head
-
chipping head
-
chord head
-
circulating head
-
cistern head
-
closing head
-
closure head
-
cluster head
-
color head
-
color-light signal head
-
column head
-
combination head
-
compensation head
-
condenser head
-
conductor head
-
cone head
-
confidence head
-
connecting rod head
-
connection head
-
contour-facing head
-
conveyor drive head
-
core receiver retrieving head
-
countersunk head
-
coupler head
-
coupling head
-
cross head
-
cross milling and drilling head
-
cross-feed head
-
cross-flow head
-
crusher head
-
crystal-oriented HPF video head
-
C-type spot-welding head
-
cue head
-
culvert head
-
cup head
-
cushion head
-
cutter head
-
cutting head
-
cylinder head
-
dado head
-
dead head
-
deaerator head
-
debranching head
-
detecting head
-
diamond head
-
die head
-
differential head
-
discard head
-
discharge head
-
dished head
-
distributor head
-
dividing head
-
door head
-
double head
-
double-gap erase head
-
drafting head
-
drawing head
-
draw head
-
drilling head
-
drill head
-
drilling-boring head
-
dual grinding head
-
dummy head
-
dust head
-
dynamic head
-
dynamic tracking head
-
electrode wheel head
-
electrooptic head
-
elevation head
-
engraving head
-
enlarger head
-
erase head
-
exhaust head
-
extruder head
-
facing head
-
feeder head
-
felling head
-
ferrite head
-
ferrostatic head
-
fillister head
-
filter head
-
fishing head
-
fixed head
-
flared column head
-
flex-hone head
-
floating head
-
fluid panning head
-
flying head
-
friction head
-
gage head
-
gear head
-
gear-shaping cutter head
-
gipsy head
-
graduated head
-
grapple head
-
gravity head
-
grinding head
-
gross head
-
gyroscopic head
-
hammer head
-
harvesting head
-
hexagon head
-
hex head
-
hexagon turret head
-
homing head
-
hopper head
-
hose coupling head
-
hydraulic pressure head
-
hydraulic head
-
impact head
-
indexing head
-
index head
-
injection head
-
integrated head
-
interchangeable head
-
interchangeable horizontal spindle head
-
ion gage head
-
irrigation head
-
jet head
-
joist head
-
kinetic head
-
knitting head
-
knurling head
-
laser head
-
latch bumper head
-
laying head
-
leader head
-
leak detector head
-
lever gun welding head
-
light signal head
-
liquid head
-
liquid-dividing head
-
live head
-
loading head
-
lost head
-
machining head
-
magnetic head
-
main rotor head
-
marking head
-
mechanical recording head
-
milling head
-
modified boring head
-
molder head
-
movable head
-
moving head
-
multidrill head
-
multiple drill head
-
multiple head
-
multiple sensor head
-
multiple-arc head
-
multiple-tree accumulating head
-
multispindle head
-
multistem felling head
-
multivertical spindle head
-
mushroom head
-
nail head
-
NC indexing head
-
NC/TP head
-
net positive suction head
-
nigger head
-
nozzle loss head
-
operating head
-
optical scanning head
-
pan-and-tilt head
-
panoramic head
-
parallel movement gripper head
-
pelletizing head
-
pickup head
-
picture head
-
pier head
-
pilot head
-
pipeline head
-
piston head
-
piston motor head
-
pit head
-
Pitot-static head
-
Pitot head
-
pivoting drafting head
-
placement head
-
planning head
-
playback head
-
plotting head
-
plunge milling head
-
potential head
-
pouring head
-
power head
-
preread head
-
press head
-
pressure head
-
priming head
-
printing head
-
probe head
-
profiling head
-
protractor head
-
pulling head
-
punch head
-
pusher-beam head
-
pyranometer head
-
quill-type head
-
rail head
-
rail-wing head
-
rainwater head
-
ram head
-
randomly selected head
-
reactor vessel head
-
read head
-
read-write head
-
record head
-
recording head
-
recording/playback head
-
refacing head
-
remote head
-
removable cylinder head
-
replay head
-
reservoir head
-
resurfaced cylinder head
-
RF head
-
right-angle head
-
river head
-
rivet head
-
roller head
-
rope-type head
-
rosser head
-
rotary head
-
round head
-
rudder head
-
running head
-
safety head
-
scanning head
-
screw-cutting head
-
seal-priming head
-
seam-welding head
-
search head
-
seepage head
-
self-cleaning head
-
self-powered welding head
-
self-powered head
-
sensing head
-
set head
-
shake head
-
shear mixing head
-
shear-and-grapple head
-
shearing head
-
sheeting head
-
sink head
-
sinker head
-
sleeve head
-
sleeve milling head
-
sliding head
-
slipper head
-
slotted head
-
sluice head
-
solid head
-
solid-state laser head
-
sound head
-
spear-point head
-
spike head
-
spindle head
-
spindle-type rotary head
-
splash head
-
split head
-
splitter head
-
static head
-
steering head
-
stem head
-
stitcher head
-
stitching head
-
stock head
-
stopper head
-
suction head
-
supply head
-
surcharge head
-
swivel work head
-
takeout head
-
tank head
-
tapered head
-
tappet head
-
tapping head
-
temperature head
-
tension head
-
test head
-
testing machine head
-
thermal head
-
thin-film head
-
thread-cutting head
-
thread-rolling head
-
tight head
-
time-code head
-
tool head
-
torch head
-
tracing head
-
tractor head
-
traveling head
-
trigger probe head
-
tripod head
-
trolley head
-
tubing head
-
turret head
-
U-flow head
-
unit-type head
-
universal boring head
-
universal milling head
-
upper head
-
valve head
-
valveless distillation column head
-
vapor-dividing head
-
velocity head
-
video erasing head
-
video head
-
video rotary heads
-
warping head
-
water head
-
well head
-
window head
-
write head -
12 head
головная часть, головка; насадок; напор, давление; направляться), брать курс (на...)fully compensated pitot-static head — приёмник полного и статического давления с полной компенсацией аэродинамической ошибки (во всем диапазоне скоростей)
IR detection head — инфракрасная [тепловая] головка обнаружения (целей)
swivel pressure sensing head — поворотный [ориентирующийся по потоку] датчик давления
— aft head— cup head— head for— heads up— jet head— war head— yaw head -
13 test
- test
- nиспытание; проверка; тест; опыт; проба; анализ; исследование; эксперимент || испытывать; проверять; исследовать
test by immersion in boiling water — проба [испытание] кипячением в воде
- test of time
- AASHO density test
- Abbot compaction test
- Abrams' test
- abrasion test
- absorption test
- accelerated test
- accelerated test for compressive strength
- accelerated strength test
- acceptance test
- accredited tests
- acid test
- aggregate crushing test
- aggregate impact test
- air test
- air content test
- air entrainment test
- air filter blackness test
- air leakage test
- air permeability test
- air permeability fineness test
- alternating bending test
- anchorage shear test
- aptitude test
- Atterberg test
- attrition test
- autoclave test
- baling-out permeability test
- ball test
- ball hardness test
- barium sulphate test
- beam test
- bearing test
- bending test
- bending tensile test
- bit wear test
- blackness air filter test
- Blain test
- block shear test
- blow flexure test
- boiling test
- bond test
- bootstrap test
- borehole shear test
- breaking test
- Brinell hardness test
- California bearing ratio test
- cement tests
- Charpy test
- Charpy V-notch impact test
- checking test
- check test
- COLE volume change test
- colorimetric test
- color test
- compacting factor test
- compaction test
- complience test
- compression test
- cone penetration test
- consistency test
- consolidated quick test
- consolidation test
- constant head permeability test
- constant rate of penetration test
- constant rate of uplift test
- constant volume test
- control test
- core test
- creep test
- C.R.P. test
- crushing test
- cube strength test
- cube test
- cylinder test
- dehydration test
- diametral compression test
- diamond pyramid hardness test
- dioctylphthalate test
- direct shear test
- dispersion test
- dissipation test
- DOP test
- Dorry test
- drain test
- drained triaxial test
- driving test
- drop-weight test
- durability test
- dust spot test
- Dutch sounding test
- dynamic penetration test
- expandable sleeve concrete test
- exposure tests
- fast field tests
- fatigue test
- field tests
- field density test
- field loading test
- field percolation test
- field vane test
- flexure test
- flow-table test
- flow test
- four-point bending test
- fracture test
- freeze-thaw test
- freeze-thaw durability test
- freezing test
- gravimetric air filter test
- hardening test of concrete
- hardness test
- Herbert cloudburst test
- hollow cylinder test
- hydraulic drain test
- hydraulic flat-jack test
- hydraulic pressure test
- hydraulic test
- hydrostatic test
- impact test
- impact crushing value test
- indentation test
- ink test
- in-place test
- in-place slump test
- in-situ test
- in-situ soil tests
- insulation test
- integrity test
- Izod impact test
- Izod test
- jolt test
- Kelly ball test
- Knoop hardness test
- laboratory test
- leakage test
- life test
- line-load test
- load test of structures
- loading test
- long-term test
- long-time creep test
- maintained load test
- manufacturer test
- methylene blue test
- model test
- needle test
- notch bending test
- notched bar test
- nuclear density test
- operational test
- organic test
- organic test for fine aggregate
- orifice tube test
- penetration test
- percussion test
- performance test
- photoelastic test
- pile load test
- pile pulling test
- pile redriving test
- plate-bearing test
- pneumatic test
- point-load test
- preliminary test
- pressure test
- pressure meter test
- proof test
- proof load test
- pumping test
- punching shear test
- pycnometer test
- Q-test
- quick test
- R-test
- Ro test
- radial percolation test
- Raymond standard test
- reception test
- reference test
- reliability test
- repeated load test
- resonant-column test
- reverse bend test
- rock bolts convergence test
- Rockwell hardness test
- Rockwell superficial hardness test
- S-test
- saponification test
- scratch test
- shearing test
- shear test
- shock bending test
- short-term test
- single point test
- site test for cement content of mortars
- slow test
- slump test
- smoke test
- soap test
- splitting tensile test
- standard-density test
- standard penetration test
- static penetration test
- strength test
- stress-relaxation test
- stress-rupture test
- tensile test
- tightness test
- time-of-set test
- torsion test
- triaxial compression test
- triaxial test
- two-point test
- type test
- ultrasonic test
- undrained test
- vacuum test
- vane test
- vibrated mortar cube test
- vibrating crushing test
- Vicat needle test
- water test
- water loading test
- water retention test
- wind loading test
- wind-tunnel test
- works beam test
- works cube test
- yield test
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
-
14 head-to-head
II. advto go \head-to-head gegeneinander antretento lie \head-to-head with sb mit jdm Kopf an Kopf liegenhead-to-ˈhead, head-to-head ˈcon·testn Kopf-an-Kopf-Rennen nt* * *head-to-head besonders USA adj1. Mann gegen Mann:2. fig Kopf-an-Kopf-…:B s1. MIL Nahkampf m2. fig Kopf-an-Kopf-Rennen n -
15 head-to-head contest
head-to-ˈhead, head-to-head ˈcon·testn Kopf-an-Kopf-Rennen nt -
16 head-to-head
Kopf-an-Kopf-Rennen nt -
17 head-to-head 'contest
Kopf-an-Kopf-Rennen nt -
18 test
1) испытание; опыт; проба; проверка2) критерий; мерило, пробный камень3) испытательный, контрольный, пробный4) испытывать; делать опыты; подвергать испытанию5) брать пробы•test for soundness — испытание ( цемента) на равномерность изменения объёма
- abruption test - absorption test - accelerated corrosion test - accelerated wear test - acceptance test - acid test - adhesion test - adverse field test - ageing test - air test - air-content test - air-pressure test - alkalimetric test - alternate stress test - alternating bending test - alternating impact test - alternating torsion fatigue test - altitude test - angular test - appearance test - approval test - arbitration test - Atterberg test - autoclave test - axial test - back-and-forth bending test - bacteriological test - ball test - ball hardness test - ball rebound test - beam test - beam rotating fatigue test - beam-strength test - bearing test of soil - bench test - bending test - bending and unbending test - bloating test - blow test - blow-bending test - blowpipe test - bounce test - breakdown test - breaking test - Brinell hardness test - brittleness test - buckling test - burning test - bursting test - calibration test - calorimeter test - cannon test - carbon residue test - Charpy test - check test - chemical test of drain - cleavage test - closure test - coating test - cold test - cold bending test - colorimetric test for organic impurities - commercial test - commissioning tests - compaction test - comparative test - comprehensive test - compression test - compression-compression test - consistency test of concrete - continuous test - continuity of test - corrosion test - corrosive wear test - crack test - crash test - creep test - cross-bending test - crushing test - cupping test - cyclic test - damp test - decantation test - deep test - deflection test - deformation test - degradation rate test - density test - destruction test - destructive test - Deval abrasion test - doubling test - drain test - drill test - drop test - dummy test - duplicate test - dynamic breaking test - elongation test - endurance test - end-use test - evaluation test - extraction test on Portland cement - factory test - failure test - fatigue test - field tests - field in-place test - file test - fire hose reel test - fire resistance test - flange test - flattening test - flexion test - flexure test - float test - flow test - folding test - fracture test - free-bend test - freezing test - freezing and thawing test - fuel test - full-scale test - green test - grinding test - guarantee test - hardness test - hot bend test - hot twist test - immersion test - impact test - impact bend test - indentation test - ink test - intermittent test - internal pressure test - Izod impact test - knock test - Knoop microhardness test - laboratory test - leak test - leakage test - life test - limiting pressure test - load test on pile - load test - loading test - long run tests - minimum flow rate test - model test - moment test - mortar bar test - non-destructive test - notch bar test - notch bending test - on-the-road test - organic impurities test - pat test - pendulum test - penetration test - percentage test - performance test - physical endurance test - pile test - pile loading test - pneumatic test - preliminary test - pressure test - prototype test - pull-out bond test - pumping test - puncture test - qualification test - quality test - rattler test - reduced section tension test - reduction-in-alkalinity test - reduction-in-expansion test - reheat test - relaxation test - remolding test - repair test - repetition test - resistance to corrosion test - resistance to impact test - reversed bend test - ride test - rig test - road tests - rod test - running test - running-in test - salt spray tests - scale test - scratch test - sedimentation test - service test - settleability test - severe test - shear test - shear test of soil - shock test - shop test - Shore's scleroscope hardness test - short-circuit test - size test - sizing test - skid test - slump test - smell test - smoke test - soap test - sodium solution test - soil test - soundness test - spray angle test - spring closure test - squeeze test - stain test - static test - strength test - strip-off adhesion test - subgrade test - subzero test - sugar test of cement - taking over tests - tear test - tee-bend test - tensile test - tension test - throw range test - time-of-setting test - torsion test - transverse test - twisting test - ultrasonic test - unit-weight test - vane test - Vicat needle test - warpage test - warranty test - water test - water absorption test - water retention test - wear test - weather exposure test - weldability test - X-ray testto test the instrument — проверять прибор, эталонировать прибор
* * *испытание; проверка; тест; опыт; проба; анализ; исследование; эксперимент || испытывать; проверять; исследовать- test of timetest by immersion in boiling water — проба [испытание] кипячением в воде
- AASHO density test
- Abbot compaction test
- Abrams' test
- abrasion test
- absorption test
- accelerated test
- accelerated test for compressive strength
- accelerated strength test
- acceptance test
- accredited tests
- acid test
- aggregate crushing test
- aggregate impact test
- air test
- air content test
- air entrainment test
- air filter blackness test
- air leakage test
- air permeability test
- air permeability fineness test
- alternating bending test
- anchorage shear test
- aptitude test
- Atterberg test
- attrition test
- autoclave test
- baling-out permeability test
- ball test
- ball hardness test
- barium sulphate test
- beam test
- bearing test
- bending test
- bending tensile test
- bit wear test
- blackness air filter test
- Blain test
- block shear test
- blow flexure test
- boiling test
- bond test
- bootstrap test
- borehole shear test
- breaking test
- Brinell hardness test
- California bearing ratio test
- cement tests
- Charpy test
- Charpy V-notch impact test
- checking test
- check test
- COLE volume change test
- colorimetric test
- color test
- compacting factor test
- compaction test
- complience test
- compression test
- cone penetration test
- consistency test
- consolidated quick test
- consolidation test
- constant head permeability test
- constant rate of penetration test
- constant rate of uplift test
- constant volume test
- control test
- core test
- creep test
- C.R.P. test
- crushing test
- cube strength test
- cube test
- cylinder test
- dehydration test
- diametral compression test
- diamond pyramid hardness test
- dioctylphthalate test
- direct shear test
- dispersion test
- dissipation test
- DOP test
- Dorry test
- drain test
- drained triaxial test
- driving test
- drop-weight test
- durability test
- dust spot test
- Dutch sounding test
- dynamic penetration test
- expandable sleeve concrete test
- exposure tests
- fast field tests
- fatigue test
- field tests
- field density test
- field loading test
- field percolation test
- field vane test
- flexure test
- flow-table test
- flow test
- four-point bending test
- fracture test
- freeze-thaw test
- freeze-thaw durability test
- freezing test
- gravimetric air filter test
- hardening test of concrete
- hardness test
- Herbert cloudburst test
- hollow cylinder test
- hydraulic drain test
- hydraulic flat-jack test
- hydraulic pressure test
- hydraulic test
- hydrostatic test
- impact test
- impact crushing value test
- indentation test
- ink test
- in-place test
- in-place slump test
- in-situ test
- in-situ soil tests
- insulation test
- integrity test
- Izod impact test
- Izod test
- jolt test
- Kelly ball test
- Knoop hardness test
- laboratory test
- leakage test
- life test
- line-load test
- load test of structures
- loading test
- long-term test
- long-time creep test
- maintained load test
- manufacturer test
- methylene blue test
- model test
- needle test
- notch bending test
- notched bar test
- nuclear density test
- operational test
- organic test
- organic test for fine aggregate
- orifice tube test
- penetration test
- percussion test
- performance test
- photoelastic test
- pile load test
- pile pulling test
- pile redriving test
- plate-bearing test
- pneumatic test
- point-load test
- preliminary test
- pressure test
- pressure meter test
- proof test
- proof load test
- pumping test
- punching shear test
- pycnometer test
- Q-test
- quick test
- R-test
- Ro test
- radial percolation test
- Raymond standard test
- reception test
- reference test
- reliability test
- repeated load test
- resonant-column test
- reverse bend test
- rock bolts convergence test
- Rockwell hardness test
- Rockwell superficial hardness test
- S-test
- saponification test
- scratch test
- shearing test
- shear test
- shock bending test
- short-term test
- single point test
- site test for cement content of mortars
- slow test
- slump test
- smoke test
- soap test
- splitting tensile test
- standard-density test
- standard penetration test
- static penetration test
- strength test
- stress-relaxation test
- stress-rupture test
- tensile test
- tightness test
- time-of-set test
- torsion test
- triaxial compression test
- triaxial test
- two-point test
- type test
- ultrasonic test
- undrained test
- vacuum test
- vane test
- vibrated mortar cube test
- vibrating crushing test
- Vicat needle test
- water test
- water loading test
- water retention test
- wind loading test
- wind-tunnel test
- works beam test
- works cube test
- yield test -
19 head up tilt table test
English-Russian big medical dictionary > head up tilt table test
-
20 test cap
См. также в других словарях:
test head — The head or height of a column of water which will give a prescribed pressure on the vertical or horizontal sides of a compartment or tank in order to test its tightness, or strength … Dictionary of automotive terms
head — [1] The upper part of something. [2] A term used to express the increase of energy content in a fluid pumped, expressed in units of energy per unit of mass, usually simply ft (feet). [3] A part of the engine which covers the piston and creates… … Dictionary of automotive terms
Test Tube Aliens — are a series of toys that were invented by JKID Ltd and released by 4Kidz, Inc., a toy and juvenile products company based in Stamford, Connecticut. Story There are 10 aliens available five good, five bad. The five good aliens have escaped their… … Wikipedia
test — test UNIX утилита для проверки типа файла и сравнения значений. Возвращает код возврата 0 (истина) или 1 (ложь) в зависимости вычисления выражения expr. Выражения могут быть как унарными, так и бинарными. Унарные выражения часто… … Википедия
Test Track — Localisation Parc : EPCOT Zone : Future World Lieu : Orlando (Floride) … Wikipédia en Français
Test (UNIX) — test файла и сравнения значений. Возвращает код возврата 0 (истина) или 1 (ложь) в зависимости вычисления выражения expr. Выражения могут быть как унарными, так и бинарными. Унарные выражения часто используются для проверки статуса файла. Также… … Википедия
Test — test UNIX утилита для проверки типа файла и сравнения значений. Возвращает код возврата 0 (истина) или 1 (ложь) в зависимости вычисления выражения expr. Выражения могут быть как унарными, так и бинарными. Унарные выражения часто… … Википедия
Test Match Special — (known as TMS ) is a radio programme broadcast on BBC Radio 4 (long wave), Five Live Sports Extra (digital) and the internet to the United Kingdom and (where broadcasting rights permit) the rest of the world, including England s winter tours to… … Wikipedia
Test — Test, TEST or Tester may refer to:In science:* Experiment, part of the scientific method * Test (biology), the shell of sea urchins and certain microorganisms * Test method, a definitive procedure that produces a test result * Chemical test, a… … Wikipedia
Head 2 Head — was a sports quiz show that aired on ABC TV in Australia between February 18 and December 9, 2006 and broadcast on Saturday evenings initially at 6 pm, then at 5 pm. The show was hosted by Ashley Bradnam and produced by Nick Price.Quiz formatThe… … Wikipedia
Head of Passes — is where the main stem of the Mississippi River branches off into three distinct directions at its mouth in the Gulf of Mexico: Southwest Pass (west), Pass A Loutre (east) and South Pass (centre). They are part of the Bird s Foot Delta , the… … Wikipedia