您要查找的是不是：
- underwater photometer 水下光度计
- This machine has been specially adapted for use underwater. 这机器是为水下使用而特别改装的。
- This machine has been specially adapted for underwater use. 这机器是为水下使用而特别改装的。
- A ship equipped for laying explosive underwater mines. 布雷舰艇装备有布水雷装置的舰艇
- A trademark used for an underwater breathing apparatus. 水肺，水中呼吸器用于水下呼吸装备的一种商标
- Travel Form is no longer useable underwater. 旅行形态不能再用于水下。
- A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置
- Riptide is a strong underwater current. 激潮是海面下一种强大的暗流，
- Yes, including the underwater form. 可以，包括在水下的形态。
- They extract ten million tons of coal each year from underwater mines. 他们每年从水下煤矿中采掘一千万吨煤。
- We must carry out the measuremnt with a photometer on an airplane. 要进行这种测量，我们必须使用一台装在飞机上的光度计。
- An underwater ridge or rock shelf. 暗礁水下隆起物或岩石架状物
- An underground or underwater passage. 地道，坑道地下的或水下的通道
- The diver was carrying out an underwater operation. 那个潜水员正在水下作业。
- We must carry out the measurement with a photometer on an airplane. 要进行这种测量,我们必须使用一台装在飞机上的光度计。
- The duck disappeared underwater. 鸭子潜入水中了.
- I found the silence underwater really eerie. 我发觉水下的寂静真令人恐怖。
- The treated samples were analyzed with the spectral photometer. 通过分光光度计法，分析老化处理后的样品。
- Robert Ballard is an underwater explorer. 罗伯特?柏拉德是一位水下探险家。
- It's three times as big underwater. 小下部分是水上部分的三倍。
