名词
中文翻译：Unknown
同义词：
['average efficiency factor', 'average efficiency coefficient', 'average efficiency index']
例句：
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1. The company's mean efficiency factor is 0.85, which is lower than the industry average.
该公司的平均效率系数为0.85，低于行业平均水平。
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2. The new product has a mean efficiency factor of 0.95, which is significantly higher than the previous model.
新产品的平均效率系数为0.95，明显高于前一代产品。
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3. The mean efficiency factor of the production process has been improved by 10% through continuous improvement efforts.
通过持续改进努力，生产过程的平均效率系数提高了10%。