air speed indicator

基本解釋

While descending to 3000 feet , a barge swan shot past smashed the pilot tube ( pilot head ) , air speed indicator out of order.
在下降到3000英尺的過程中，一只大天鵝很快越過，撞壞了空速管。真空速表失效。
www.translation-dictionary.net
Flexible control, the motor adjust air flow can be single period of speed , three or five periods of speed. It is also enclosed operation, abnormal indicator and abnormal dry contact for control.
靈活的控制方式，可作單段速、三段調(diào)速、五段調(diào)速或無級調(diào)速調(diào)節(jié)風(fēng)量并附運(yùn)轉(zhuǎn)/異常指示燈/異常干接點(diǎn)，便于監(jiān)控；