After the normal air-running, engineer must move the regulating handle to the position corresponding to the pressure which has been set by the pressure reducing valve (pos. no. 28) when the speed of the main engine is more than the air cut speed.是什么意思_After the normal air-running, engineer must move the regulating handle to the position corresponding to the pressure which has been set by the pressure reducing valve (pos. no. 28) when the speed of the main engine is more than the air cut speed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句