China kicks off air defense drills.

中国宣布开始新一轮军事演习。

Turn off air conditioning, vents, fans and furnace.

关闭空调，排气扇，通风口和炉子。

Turn off air conditioning, vents, fans, and furnace.

关闭空调，排风扇，通风口和炉子。

This article analyses the construction and working principle of cutting-off air brake system.

本文分析了农用挂车断气制动系统的结构和工作原理。

Active parts of slotless motor winding directly cut off air - gap field, it could produced eddy-current loss.

无槽电机绕组的有效部分直接切割气隙磁场，在其中引起涡流损耗。