air switch-over的意思|示意

For the majority of those Americans who get their television free over the air, this will be the big switch-off.

对大多数免费收看开路电视的美国人来说，这个关停影响巨大。

Motorized air dampers are used to bring in fresh air or, in times of higher temperature, switch over to recirculation.

当温度升高时，通过电动风门提供新鲜空气或转换到空气再循环模式。

Safety feature-air purifier includes tip over switch and auto-shut off function to ensure safety.

安全功能包括尖端空气净化器的开关和自动关机功能，以确保安全。

The arranged work change-over switch can alarm simultaneously by changing over the inductive alarm of human body, the induction of human body, and the air vibration.

所设置的工作转换开关可以切换人体感应报警、人体感应与空气振动同时报警。