air circulation空氣環(huán)流air column空氣柱air compre or空氣壓縮機(jī)air conde er空氣電容器air conveying氣齡送air coolant空氣冷卻劑air cooling空氣冷卻air coordinates空間坐標(biāo)air current氣流air cushion氣墊air cylinder壓氣缸air damper空氣阻尼器air damping空氣阻尼air de ity空氣密度air drag空氣阻力air duct風(fēng)道air eddy空氣渦旋air flow氣流空氣量air flow meter氣療air friction空氣摩擦air gap空隙air gas風(fēng)煤氣air hammer空氣錘air hardening空氣淬火air hoist風(fēng)動起重滑車air humidity空氣濕度air inflating充氣air injection diesel engine空氣噴射柴油發(fā)動機(jī)air inrush空氣侵進(jìn)air intake valve進(jìn)氣閥air jet空氣噴射air pipe氣管air plasma空氣等離子體air pre ure gage空氣壓力計