名词
中文翻译：机械指数
同义词：
['mechanical efficiency', 'mechanical efficiency index']
例句：
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1. This study aimsto improve the mechanical efficiency of the machine.
这项研究旨在提高机器的机械效率。
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2.The mechanical efficiency index is a measure of how well the machine operates.
机械效率指数是衡量机器运行效率的一个指标。
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3.The mechanical efficiency index is calculated by dividing the output by the input power.
机械效率指数是通过将输出功率除以输入功率来计算的。