名词
中文翻译：减少量计
同义词：
['reducer', 'reduction meter']
例句：
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1.The engineer used a reduction tachemometer to measure the amount of oil in the engine.
工程师使用一个减少量计来测量发动机中的油量。
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2. The reduction tachemometer was used to monitor the progress of the chemical reaction.
减少量计被用来监测化学反应的进展。
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3. The reduction tachemometer was used to calculate the efficiency of the machine.
减少量计被用来计算机器的效率。