double-flange frame

- double-acting forcemeter - double-acting regulator - double-acting rotary engine - double amplitude - double angular ball bearing - double-arm - double-arm lever - double-back - double-ball pitman arm - double-bank - double-bank radial engine - double-beat - double-bend - double-bolted schackle - double-braid covering - double-chain drive - double-charge - double-chart recorder - double-check - double-cheek snow plough - double-clutch method - double-concave - double-cylinder engine - double-deck - double-deck bridge - double-dial - double dipole - double-drive bogie - double drop frame - double-drum hoist - double duty - double-edge - double elliptic spring - double-ended spanner - double ender - double-flange wheel - double-flanged - double flat - double-fork lever - double-gap - double governor - double-heading - double-head wrench - double helical gear - double helical tooth - double-hook piston ring - double-hulled - double-hung - double ignition - double-level bridge - double-lift cam - double-line traffic - double-motor drive - double over - double-piston - double-piston engine - double-piston-type engine - double-pitch roller chain - double-rate meter - double-reduction gear - double-reduction shaft - double-reduction spur pinion - double-row - double-seal bearing - double-sealed bearing - double seam - double-seat valve - double-shaft drive - double-sided impeller - double-side tipping - double-slot piston ring - double-spark ignition - double spiral gear - double-stage - double staining - double steering - double stroke - double swing door - double T-section - double-taper-faced piston ring - double thread - double-throw - double-tracked - double tread - double-tube tyre - double-type - double-tyre wheel - double universal joint - double-V engine - double-V joint - double-walled piston - double-way - double wing door - double-wire system - double-wound

- track adjusting bracket - track adjusting wheel - track angle - track assemble forcing pin - track assembly - track bar - track bushing - track carrying wheel - track centerline - track centers - track charting - track choke - track circuit leaksge - track cleaner - track combine - track connection - track control arm - track curvature - track deflection - track diagram - track discharge - track distance - track frame support collar - track frames equalizer - track gage - track group - track group coil - track guard - track guide ring - track-guided - track guiding wheel - track holding - track idler - track idler bracket - track idler guard - track in range - track jumper - track lable - track layer - track laying - track-laying mover - track length - track-lift - track lifter - track link clogging - track link counterbore - track link key - track link pin - track maintenance toll - track master bushing - track master link bushing - track master link pin - track master pin - track measurement car - track-mounted all-hydraulic drill rig - track mover - track oscillated design - track packing machine - track pin - track pin hole - track pinch bar - track pitch - track pitch extension - track pitch gage - track plate - track plotting - track press - track press conveyor - track press ram - track press tool holder bar - track profile - track protection - track rail assembly - track registration detector - track relay - track release housing - track release mechanism - track release yoke - track-riding loader - track-riding manipulator - track road - track roller bearing - track roller bushing - track roller flange - track rollers - track scale - track scales - track shaft - track shifting machine - track shoulder - track stringer - track support roller - track system - track tamping machine - track target - track tension - track tensioning roller - track time - track twist - track-type carrier - track-type excavator - track-type loader - track-type skidder - track-type tractor - track-type vehicle - track velocity - track vibration - track wheel - track wheel guard - track width - adjacent track - adjustable track - AGV track - automated guided vehicle track - annular track - assembly track - auxilliary track - bad-order track - bridge-crane track - buffer track - buried wire track - cam track - car track - cloud track - conductive track - continuous welded rail track - control track - conveyor track - counter-rotating tracks - crane track - data track - dead-end track - dead-level track - departure track - discontinuos track - door track - double track - draw-out track - dredge track - drum track - dru-jointed track - electrified track - exit track - factory track - feed track - flexible track - fog track - freight track - gate track - gear track - gravity track - guide track - helical track - humping track - input track - insulated track - interchange track - jointed track - load track - loading track - locomotive holding track - loosen track - low-pressure track - main draw-out track - main-line track - narrow-gauge track - output track - overhead track - roller track - side track - storage track - table track - target track - taxi track - transfer track - unload track - unloading track - wear track - wheel track

- system of catalogs - system of catalogues - system of forces - system of ground points - system of road signs - system of scaffolds - acoustic signalling system - active residential solar heating system - aeration system - air-brake system - air-comfort system - air-conditioning system - air-curtain system - air-foam system - airline system - airline vacuum system - air-pressure water system - all-outside air-conditioning system - arch system - arch-and-pier system - audible alarm system - Automated Data Management System in Building - ADMSB - automatic fire alarm system - balanced system of ventilation - bar system - basic system - beam system - blower system - British absolute system of units - building system - building central air conditioning system - building solar optical system - bypass pipe system - cable system - cantilever tieback system - cathodic protection system of pipelines - central fan electric heating system - central hot water supply system - check-board system - circulating water system - closed system - closed heat supply system - closed pipeline system - collecting system - colour spraying systems - combined extract-and-input system - combined sewerage system - community complete system in containers or skids - composite cable roof system - compressed-air system - computer-aided system - consolidated power system - control system of survey - cooling system - cooling pipe system - coordinate system - curing system - decimal system - designation system - discrete system - discrete-continual system - distributing system - district heating system - double-pipe system - double-pipeline system - double-pipe riser system - downward system of ventilation - drainage system - drencher system - drop system - dry pipe sprinkler system - dry return system - duct system - earthling system - ejector system - elastic system - electric heating system - embedded panel system - emergency power supply system - energy recovery system - engineer's system of units - filling system of navigation lock - filtration system - fire-alarm sounding system - fire-fighting system - fire-sprinkling system - fire warning system - fixing systems - flange system - flooding system - floor system - floor system of bridge - floor heating system - flow-through system - flue gas cleaning system - fluid power system - forced circulation system - four-axis system - framed system - gas heating system - glaze systems - gravity system - gravity water supply system - grid system - hazard system - heating system - heat pump system - heat supply system - high pressure air-conditioning system - high velocity air-conditioning system - hinged system - hoisting system - hot air system - hot blast system - hot water supply system - inflation system - instantaneously variable system - integral deck system - integrated dispatching system - invariable system - ion-exchange system - irrigation system - land system - large public water system - lateral system - left-handed system - lighting system - local air-conditioning system - lock-filling system - long-line system - low pressure air-conditioning system - low velocity air-conditioning system - low voltage system - main system - management system - measuring system - mechanical systems of a house - medium-size public water system - membrane system - metric system - modular coordinating space system - monitoring system - multistage gas supply system - network system - observing system - once-through system - one-layer cable system - one-pipe heating system - one-pipe loop system - open system - open heat supply system - open return system - overhead system of heating - overhead heating system - panel air system - panel cooling system - pipeline system - piping system - plane system - plumbing system - pollution control system - population settlement group system - post-tensioned system - potabilization system - power system - power-reservoir system - pressurized water treatment system - pre-tensioned system - primary system - public transport system - public water system - public waterworks system - quality control system - quarternary system - railroad system - recirculated heating system - recirculation duct air conditioning system - recool system - rectangular system of street layout - reliability coefficients system - remote control system - reusing water supply system - rigid cable roof system - ring heating system - roll-cap system - round duct system - safety valve of a hydraulic system - saprobity system - separate sewerage system - septic system - sewerage system - single duct air-conditioning system - single-stage system - single-track automatic block system - slab-stringer system - smoke-detector system - solar aquatic system - solar cooling system - solar heating system - solar thermal power system - space system - split system - sprinkler system - statically determinate system - statically indeterminate system - steel plate system - structural system - supply air system - suspension system - thermal reheat system - three-dimensional system - three-way system of reinforcement - thrust system - total energy system - two-dimensional system - two-duct air-conditioning system - two-layer cable roof system - two-pipe water heating system - underfloor heating system - underground cable system - unified modular coordination system - universal sewerage system - upfeed water heating system - up-lighting system - utility system - utility detection system - vacuum system - vandalproof system - variable air volume system - ventilation system - warning system - waste treatment system - waste water system - water system - water measuring systems - water purification system - water quality system - water quality indicator system - water supply system - water supply by zones system - water treatment systems - wind bracing system - zone system - system of forces
- system of masses
- system of scaffolds
- ABC system
- AC system
- acoustical ceiling system
- active solar energy system
- aesthetic value system
- air classification system
- air cycle refrigerating system
- airfield soil classification system
- air pollution control system
- air-to-air system
- air-to-water system
- air transport system
- alarm system
- all-air system
- all outside air system
- all-water coil system
- all water fan coil system
- approach lighting system
- arterial system
- Atterberg soil classification system
- audio alarm system
- automated casting system
- automatic fire alarm system
- automatic fire protection system
- automatic flushing system
- balanced system
- balanced system of streets
- balanced ventilation system
- bar system
- beam structural system
- bell alarm system
- Benoto piling system
- bivalent heat pump system
- bleed-in system
- blow and exhaust system
- blow through air-conditioning system
- blow through fan system
- bootstrap system
- box system
- bridge deck structured system
- British soil classification system
- building system
- building automation system
- building-drainage system
- building gravity drainage system
- building management system
- built-in dust suppression system
- burglar alarm system
- cable system
- central air heating system
- central fan system
- centralized hot-water supply system
- central plant air conditioning system
- changeover system
- circulating system
- circulation water supply system
- circulation water system
- closed system
- closed heat-supply system
- closed-loop heat pump system
- closed-type steam heating system
- coding system
- cogeneration system
- cold supply system
- collapsing-ring bridge rail system
- combined drainage system
- combined sewage system
- complanar system of structural members
- complanar force system
- complete-mix activated sludge system
- composite frame system
- compression system
- concrete suspended flooring system
- constant volume system
- continuous conveying system
- continuous suspension system
- control system
- cooling system
- coordinate system
- cost-efficient floor system
- crossbar approach lighting system
- cross blow ventilation system
- curtain walling system
- custom forming system
- decentralized air conditioning system
- decentralized sewerage system
- deluge sprinkler system
- desiccant cooling system
- designation system
- design-built system
- diffusion-absorption system
- digital indicating system
- direct system
- direct air heating system
- direct cooling system
- direct expansion system
- direct hot water system
- direct hot-water supply system
- direct return system
- direct through air-conditioning system
- distribution system
- domestic hot water system
- domestic sewerage system
- "Dot" recording system
- double-pipe system
- double stack system
- down-feed system
- drainage system
- draw-in system
- draw-through fan system
- draw-through system
- drencher system
- drop system
- dry-pipe sprinkler system
- dual conduit system
- duct system
- ductless split air conditioning system
- dust collecting system
- dust extract system
- early warning system
- economical floor system
- ejector refrigerating system
- elastic mechanical system
- elastic system
- electric heating system
- electric reheat system
- energy management system
- environmental system
- exhaust system
- extract system
- FAA soil classification system
- fan coil system
- Federal aviation administration soil classification system
- fire alarm system
- fire-extinguishing system
- fire protection system
- flat plate-pipe column floor system
- floor structural system
- floor system
- flow-through system
- F-number system
- force system
- forming-and-reinforcing system
- Forton system
- four pipe system
- gantry crane system
- gas heating system
- gravity system
- gravity-flow heating system
- gravity sewerage system
- gravity steam heating system
- gravity water-supply system
- grid coordinate system
- gridiron distribution system
- grounding system
- groundwater control system
- group water supply system
- gyratory system
- heat distribution system
- heating system
- heat-of-light system
- heat pump system
- heat recovery system
- heat supply system
- heat-traced system
- high-intensity lighting system
- high temperature hot-water heating system
- high velocity system
- hold-over system
- holonomic system
- hot-air system
- hot water system
- hot-water circulation system
- hush piling system
- hybrid system
- hydraulic control system
- hydrophilic system
- hydrophobic system
- indirect expansion system
- indirect hot-water supply system
- indirect refrigeration system
- individual sewage-disposal system
- induction air conditioning system
- induction system
- industrialized building systems
- inflation system
- instrument landing system
- integral deck system
- integrated distribution floor system
- inverter driven VRV system
- Jackson system
- land system
- large panel system
- lighting system
- line system
- liquid overfeed system
- local sewerage system
- low-pressure system
- low pressure hot water system
- low velocity system
- main system
- maintenance management system
- mass transit system
- materials-handling system
- mechanical system
- mechanical refrigerating system
- mechanical supply system
- medium pressure hot water system
- medium temperature hot water system
- microbore heating system
- modular system
- modular air conditioning system
- modular compression sealing system
- modular decking system
- modular precast building system
- multiple-degree system
- multiple web system
- multiple well system
- multistage gas-supply system
- multizone system
- municipal piping system
- nail-free formwork system
- non-changeover system
- octopus duct system
- oil fired heating system
- once-through water-supply system
- one-degree system
- one-duct air-conditioning system
- one-pipe system
- one-pipe loop system
- one-way system
- open system
- open expansion tank system
- open-loop control system
- open return system
- open steam heating system
- operation system
- overhead heating system
- overhead runway system
- packaged cogeneration system
- panel air-conditioning system
- panel air system
- panel-lock system
- partially-separate system
- piping system
- plane system of forces
- plane grid system
- plenum system
- plumbing system
- pneumatic conveying system
- post-tensioning system
- preaction sprinkler system
- prefabricated pipe conduit system
- pressurization system
- pressurized heating system
- pressurized hot water system
- primary-secondary system
- principal system
- public system
- public waterwork system
- push-through fan system
- push-through system
- quality system
- rail mounted track laying system
- raised floor system
- rapid transport system
- recool system
- recycling system
- recycling water system
- redundant bridge system
- refrigerating system
- regenerative air cycle system
- regional settlement system
- reheat system
- return system
- return air system
- reverse return system
- reverse return upfeed system
- rising heating system
- road system
- roofing system
- run-around system
- safety system
- scraper system
- sealed heating system
- security system
- self-climbing form system
- separate sewerage system
- separate system
- series loop system
- sewage system
- shunt system
- single-degree-of-freedom system
- single-degree system
- single duct air conditioning system
- single-pipe heating system
- single-pipe heat-supply system
- single-stack plumbing system
- single-storey heating system
- single web system
- single-zone air-conditioning system
- slab-stringer system
- small bore heating system
- smoke control system
- smoke extract ventilation system
- soil system
- soil absorption system
- solar heating system
- solid fuel heating system
- split system
- sprinkler system
- state plane coordinate system
- statically determinate system
- statically indeterminate system
- stationary system of loads
- steam heating system
- steel plate system
- storm sewer system
- structural system
- structural monitoring system
- sub-atmospheric heating system
- subbuilding drainage system
- subsurface drainage system
- subsurface sewage disposal system
- supply air system
- supporting formwork system
- suspension structural system
- swing joint system
- taxiway system
- telpher system
- terminal reheat system
- thermal storage heating system
- thermosiphon system
- three-pipe system
- three-pipe air-conditioning system
- three-pipe heat supply system
- total energy system
- track laying system
- trench shoring system
- trussed system
- truss-supported deck system
- tube cleaning system
- two-degree-of-freedom system
- two-degree system
- two-pipe system
- two value system of proportional balancing
- two value system
- two-way system
- underfloor conduit system
- unvented system
- up-feed heating system
- utility detection system
- vacuum heating system
- vacuum return system
- vacuum waste disposal system
- variable air volume system
- variable refrigerant volume system
- variable volume system
- variable water volume system
- VAV system
- vented system
- ventilation system
- VRV system
- VWV system
- warning system
- water-air heating system
- water booster system
- water-supply system
- water-to-air system
- water-to-water system
- wellpoint system
- wet return system
- wind framing system
- wire cable control system
- wiring system
- zoned system
- zone reheat system

- arch girder - arched girder - balcony girder - bow girder - bow and chain girder - bowstring girder - box girder - braced girder - braking force transferring girder - bridge girder - built-up girder - cantilever girder - cellular girder - compound girder - corrugated web girder - crane girder - crane-runway girder - cross girder - elastically supported girder - end girder - fascia girder - fixed girder - floor girder - foundation girder - H-girder - half-lattice girder - half-latticed girder - hinged cantilever girder - lattice girder - latticed girder - launching girder - longitudinal girder - lower wind girder - outrigger girder - overhead crane girder - panel girder - parallel-flange girder - plane girder - prefabricated girder - riveted girder - socle girder - steel girder - stiffening girder - suspension girder - T-iron girder - trapezoid girder - trapezoidal girder - triangular girder - trussed girder - tubular girder - upper wind girder - Vierendeel girder - Warren girder - web girder - annular girder
- arched girder
- arch girder
- arched girder with braced spandrels
- arch girder with braced spandrels
- arched girder without horizontal thrust
- arch girder without horizontal thrust
- arched girder with polygonal outlines
- arch girder with polygonal outlines
- balcony girder
- bowstring girder
- box girder
- bridge girder
- cable-stay launching girder
- cantilever girder
- compound girder
- crane girder
- crane bridge girder
- crane runway girder
- cross girder
- curved bridge girder
- diaphragm-stiffened box girder
- double-tee girder
- drop-in girder
- dropped girder
- eaves girder
- edge girder
- elastically supported girder
- gantry girder
- H girder
- half-lattice girder
- haunched girder
- hollow steel box girder
- hybrid girder
- latticed girder
- lattice girder
- launching girder
- open-frame girder
- plain girder
- plate girder
- post-tensioned box girder
- precast prestressed girder
- prefabricated girder
- preflex girder
- prestressed concrete box girder
- ring girder
- segmental box girder
- single-hinged arched girder
- single-hinged arch girder
- solid-web girder
- standard CPC I prestressed bridge girder
- steel arched girder
- steel plate box girder
- stiffening girder
- transfer girder
- tubular girder
- Vierendeel girder
- Warren girder
- welded light girder
- welded plate girder
- welded wire girder
- wind-bracing girder
- wood lattice girder