通风孔

使用植筋注射器从孔底向外均匀地把适量胶粘剂填注孔内,注意不要将空气封入孔内.

spray deflector air-cushion vehicle

cast-resin dry-type transformer, air-cooled transformer (air-core transformer)

trading port open to sea, land and air

air-conditioning unit【制冷】

being controlled dependent on air throttle valv

air pistol adapted for underwater use

engine mass air flow meter

treated-air delivery【环境】