声纳(声波定位仪)发出的声音常常刚刚达到张力的最大值。
所以，就像在潜水艇电影里拍的一样，所有的目光都盯着压力表，所以的耳朵都听着声波定位仪。
So, as in submarine films, all eyes are on the pressure gauge, all ears on the sonar.
检测水压承受力的金属嘎吱作响、发出哀嚎；声纳(声波定位仪)发出的声音常常刚刚达到张力的最大值。
Metal tested to endurance creaks and groans; a sonar pings just often enough to maximise the tension.
声波定位仪正好用来检测这种情况；而在船只上远程遥控运行、云集在此处附近的地震测试器和相机也正好派上用场。
Sonar is being used to monitor the situation; so are seismic tests and the cameras on the remotely operated vehicles swarming round the site.
测量仪为超声波电子定位仪，它们安装在固定架上， 将测量数据无线传输到主控计算机。
The electronic positioning units are ultrasonic electronic positioning units which are arranged on a fixed frame to transfer measure data to a main control computer in a wireless way.
测量仪为超声波电子定位仪，它们安装在固定架上， 将测量数据无线传输到主控计算机。
The electronic positioning units are ultrasonic electronic positioning units which are arranged on a fixed frame to transfer measure data to a main control computer in a wireless way.
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