作为水下能量转换装置，热气机是十分合适的。
This makes the engine a highly appropriate energy converter for underwater applications.
它是一种把机械能转变为液压能的能量转换装置。
It was a sort of do with mechanical energy translate hydraulic energy 'energy conversion device.
动力元件：把原动机输出的机械能转变为液体压力能的能量转换装置。
Power element: an energy conversion device for converting mechanical energy output from a prime mover into a liquid pressure energy.
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