But whales communicate better through ultrasonic sounds than through human-audible sounds, especially underwater, "he explained."
但与人耳可听见的声音相比，鲸鱼更‘擅长’用超声波交流，尤其是在水下。
Doctors know that it's not unusual for drowning victims-especially ones who have been underwater for about 20 minutes or less, as Ostrander was-to survive and fully recover.
医生们都知道对于一个溺水者，特别是在水下的时间少于20分钟的时候，就像Ostrander这样的情况，幸存下来并完全康复并不少见。
Central to the case against bottom-fishing is the protection of underwater mountains, known as seamounts, which are especially rich in Marine life of all kinds.
海底拖网捕捞招致抗议的核心原因来自对水下山脉的保护。这些被称为海山的水下山脉中栖息有极其丰富的各种水生生物。
The deformation and stress detection of long-distance oil & gas pipelines, especially the underwater pipelines, is very critical in safe pipeline operation.
前言： 大型输油、输气管道的变形和应力检测，特别是水下敷设的长距离大型管道的变形和应力检测，一直是困扰管道安全运行的一个难点。
The invention relates to an improvement on the underwater tube and cable maintainer, especially providing an underwater dry maintain cabin.
本发明属于水下管线、电缆维修装置的改进。为水下管线、电缆的 维修提供一种水下干式维修工作舱。
The measurement of signal phase is widely applied in many fields both on theory and engineering especially in the USBL underwater positioning system.
信号相位的测量在诸多领域的理论和工程上有很广阔的应用。
The measurement of signal phase is widely applied in many fields both on theory and engineering especially in the USBL underwater positioning system.
信号相位的测量在诸多领域的理论和工程上有很广阔的应用。
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