1、
The system consists of an energy source, a prime mover, a generator, and a load.
系统由一个能量源, 一个主动力推进装置(汽轮机), 一个发电机, 和一个负载组成.
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2、
Solar energy is lauded as an inexhaustible source that is pollution and often noise free.
太阳能被称为是取之不尽的能源,没有污染,通常也没有噪声,而且用途广泛.
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3、
