The PD140 hand-held metal Detector is a high-sensitivity device designed to detect magnetic and non-magnetic metal objects.

PD 140手持金属探测器是一种用于磁性和非磁性金属物体检测的高灵敏度设备。

youdao

They run the hand-held metal detector over her head, and are convinced that that is what is setting off the larger detector.

他们用金属探测器在她身上扫来扫去，探测器有很大的反应，但不可能认为这是个机器人，只好接受我们的解释。

youdao

The second idea is a device similar to a metal detector a single magnetron on a hand-held boom.

ECONOMIST: Landmines