储气罐

主空气瓶（控制空气瓶、汽笛空气瓶）装船后气密试验和安全阀的调整。

arrangement of air supply devices in muffle furnaces

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】

wet-type air cooler【制冷】化工

air rifle & pellet