Đồng nghĩa của air shaft

Danh từ

A long, narrow, typically vertical hole that provides passage
shaft tunnel duct passage vent borehole column trough adit bore burrow channel chute conduit downcast flue hole passageway sluice tube upcast well winze pit raceway airduct chimney cylinder mineshaft spillway light well pipe inlet funnel opening pipeline outlet airway cavity lum canal entry smokestack course air passage chimney stack ventilator bore-hole entrance slide chasm chamber cave cavern excavation depression ramp runway incline slope approach stack femerell smokeshaft gutter leader penstock vessel culvert line fall chase orifice aperture vas watercourse trachea ductule ductus aqueduct gap space chimney pot underpass subway pore cleft slit port gallery trench blowhole vent hole split breather sett crawlway crosscut sap exit drain spout escape avenue exhaust smoke duct exhaust pipe ventilation shaft subterranean passage underground passage crawl space hole in the wall crack rent breach fissure crevice chink rift slot interstice break cranny rupture perforation mouth gash cut hiatus fracture interval groove void discontinuity separation gulf foramen puncture gate window tear incision scission valve door porthole eye outfall eyelet slash notch peephole spyhole loophole check nozzle crevasse division grike cleavage waste pipe fan air duct pinhole fault divide nook socket leak ravine crater lacuna keyhole precipice abyss hollow nick vacuity interspace run trap entrepôt embrasure laceration rip placket small opening hose piping conveyor main tubing siphon fistula gateway safety valve stopcock syphon sewer conveyer faucet blow-off portal doorway entryway access ingress stopper tap means of access way in way out standpipe spigot recess judas scuttle

Trái nghĩa của air shaft

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