名词
中文翻译：被动传感器
同义词：
['Passive Sensor', 'Passive Detector', 'Passive Sensor Device']
例句：
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1. Thenew device uses a passive sensor to detect the presence of water vapor in the air.
这款新设备使用被动传感器来检测空气中的水汽含量。
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2. The sensor is designed to be passive and only needs to be activated when it senses an object approaching.
该传感器设计为被动型，仅在感知到物体接近时才需要被激活。
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3.In this experiment, we used a passive sensor to measure the temperature changes in the room.
在这个实验中，我们使用了被动传感器来测量房间内的温度变化。