当你带着一个导体（比如口袋的钥匙）走过机场的金属探测器时，机器会发出警报声。
When you go through a metal detector at the airport with a conductor such as keys in your pocket, the alarm goes off.
隐藏探测器是这么小，可以随身携带。当无线摄像头发现，一个LED灯闪烁，并发出警报声的声音。
The Hidden Camera Detector is so small you can take it anywhere. When a wireless camera is detected, an LED light flickers and an audible alarm sounds.
其次，在高速采集卡的基础上设计研制了基于多元线性阵列探测器系统的快速光声层析成像装置，首次实现了基于多元阵列探测器的光声成像。
Then, a multi-element linear transducer array system based on the high-speed data acquisition card was designed and realized photoacoustic imaging by it firstly.
此外，声探测器可用于产生表示探测的建筑材料对声能的响应的信号。
Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy.
声探测器可用于探测建筑材料对声能的响应。
An acoustic detector may be operable to detect a response of the construction material to the acoustical energy.
声探测器可用于探测建筑材料对声能的响应。
An acoustic detector may be operable to detect a response of the construction material to the acoustical energy.
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