ホーム > Term: flaps
flaps
Eng. Rectangular wooden valves about 24 in by 18 in by 1-1/2 in (61 cm by 46 cm by 3.8 cm) thick, hung vertically to the framework of the air chambers of a ventilator. A flap valve.
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
0
作成者
- ed.young
-
(V.I.P) 21084 ポイント - 100% positive feedback
(Milwaukee, United States)
