| 单词 | detector | 
| 释义 | detector [di`tek·tǝr]  ELECTRONICS The stage in a receiver at which demodulation takes place; in a superheterodyne receiver this is called the second detector. Also known as demodulator; envelope detector.  SCIENCE AND TECHNOLOGY Apparatus or system used to detect the presence of an object, radiation, chemical compound, or such.  | 
	
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