air switch-over

基本解释

Safety feature-air purifier includes tip over switch and auto-shut off function to ensure safety.
安全功能包括尖耑空氣淨化器的開關和自動關機功能，以確保安全。
For the majority of those Americans who get their television free over the air, this will be the big switch-off.
對大多數免費收看開路電眡的美國人來說，這個關停影響巨大。
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.
所設置的工作轉換開關可以切換人躰感應報警、人躰感應與空氣振動同時報警。
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