名词短语
中文翻译：机车速度特性同义词
同义词：
['locomotive performance', "locomotives' speed characteristics"]
例句：
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1. The train's locomotive speed is crucial for its efficiency.
火车的机车速度对于其效率至关重要。
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2. The engineer must understand the locomotive speed characteristics of the train to operate it safely.
工程师必须了解火车的机车速度特性，才能安全地操作它。
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3. The locomotive speed characteristics are used to optimize the train's performance.
机车速度特性被用来优化火车的性能。