detector that gives a signal when it detects the presence of metal; used to detect the presence of stray bits of metal in food products or to find buried metal
双语例句
用作名词 (n.)
Design Digial Versatile Metal Detector. 种数字式金属探测器设计。
We should remove metal objects from your pockets and walk through a metal detector. 我们得取出口袋中的金属物，走过金属探测器。
