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单词 motion sensor
释义

Definition of motion sensor in English:

motion sensor

noun
  • A sensor that is sensitive to motion; a motion detector, especially as (part of) a security device that can trigger a burglar alarm, or as an aid to positioning or navigation.

Origin

1960s; earliest use found in Science.

 
 

Definition of motion sensor in US English:

motion sensor

noun
  • A sensor that is sensitive to motion; a motion detector, especially as (part of) a security device that can trigger a burglar alarm, or as an aid to positioning or navigation.

Origin

1960s; earliest use found in Science.

 
 
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更新时间:2024/11/10 8:01:59