名词
中文翻译：Unknown
同义词：
['substitution factor', 'substitution rate', 'replacement rate']
例句：
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1. The company's decision to replace the old equipment with new ones is a wise one.
公司决定用新设备替换旧设备是一个明智的决定。
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2.The study found that the replacement factor for this material was higher than expected.
研究发现，这种材料的替代因子高于预期。
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3. The researchers have developed a model that can predict the replacement factor of a new technology.
研究人员开发了一种模型，可以预测新技术的替代因子。