空气循环

为了获得足够的干燥条件，须保持良好通风。

新研发的热空气循环系统使每一段的温度一致并且最小为ΔT.

当采用风冷系统时，低噪声风机通过强迫空气循环，可降低线圈的运行温度，即可增大容量输出至额定的150%左右。

air blower

air embolism

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