return air horizon

n

1.   линия, черта

2.   верёвка, бечёвка, шнур

3.   граница; контур; предел

4.   морщина, складка

5.   линия инженерных сетей; рельсовый путь; технологическая линия

to line by eye — рихтовать «на глаз»

- line of action of the force
- line of action
- line of corresponding stages
- line of creep
- line of force
- line of least pressure
- line of least resistance
- line of principal strain
- line of route
- line of rupture
- line of seepage
- line of sight
- line of thrust
- line of traffic
- line of wells
- line of zero fill
- A line
- aerial line
- air line
- air void line
- arch center line
- ashlar line
- assembly line
- B line
- backhaul line
- barrier line
- base line
- beam center line
- belt line
- bleed lines
- border line
- boundary line
- branch line
- bridge center line
- brine line
- broad-gauge line
- building line
- building setback line
- bulkhead line
- buried line
- bypass line
- C line
- cable line
- center line
- center line of inertia
- center line of the hook
- chalk line
- channel line
- closing line
- collimation line
- communication line
- compressed air line
- condensate line
- connecting line
- connecting drainage line
- consumer gas service line
- contour line
- conveyor belt line
- cordon line
- crest line
- critical state line
- curved line
- datum line
- dead line
- deflection-influence line
- digging line
- discharge line
- discharge section line
- distribution line
- dot line
- dot and dash line
- dotted line
- double line
- double-rodded line
- drilling line
- duplicate level line
- edge line
- electric line
- electrified railway line
- encroachment line
- energy grade line
- energy line
- envelope line
- equipotential lines
- expansion line
- exposing line
- fathom line
- fence line
- fire line
- flood line
- flow line
- formation line
- frontage line
- frost line
- future line
- gas line
- gauge line
- geodesic line
- grade line
- gravity pipe line
- grooved lines
- ground line
- guide line
- hair line
- half line
- heating line
- high-pressure line
- high-speed line
- high-tension line
- hoisting line
- horizon line
- hot gas line
- hydraulic grade line
- improvement line
- influence line
- influence line for bending moment
- influence line for reaction
- influence line for shear
- isopiestic lines
- isoseismal line
- lift line
- light line
- liquid line
- load distribution line
- location line
- lot line
- Luders' line
- machine's center line
- main line
- mason's line
- moment-influence line
- neat line
- outside foundation line
- overhead line
- overhead contact line
- overhead electric line
- painting line
- pay line
- phreatic line
- pressure line
- project property line
- pumped water line
- random line
- reaction-influence line
- reference line
- return line
- run line
- runner line
- sand lines
- saturation line
- secant line
- secondary line
- section line
- shear-influence line
- short line
- sighting line
- simultaneous level line
- slip line
- slope line
- sloping straight line
- snapping line
- snow line
- span pipe line
- springing line
- straight line
- strain line
- stream line
- strike line
- suction line
- supply line
- tag line
- tangent line
- thaw line
- three part line
- traffic line
- transit line
- transmission line
- trunk line
- two-part line
- underground electric line
- utility line
- vertical line
- wall line
- water line
- water level line
- whip line
- white line
- working line
- yield line
- zero line
- zero air voids line