他们用便携金属探测器扫描海底，进行调查。
They conducted their investigation by sweeping handheld metal detectors over the seafloor.
研究信息融合技术在海底管道维修装置与检测装置间的应用，采用超低频电磁波，小波分析等技术与管线跟踪探测仪、DGPS以及示踪信号探测器等设备解决发射、接收、通讯技术中的关键技术点。
The extra low electromagnetic wave, wavelet technology, pipe track instrument, DGPS and tracing signal equipment are used to solve the key question of trans-mit-receive and communication.
他们用便携金属探测器扫描海底，进行调查。
The act of exploring or searching with or as if with a device or an instrument.
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