名词
中文翻译：动力轴
同义词：
['power shaft', 'power shaft connection']
例句：
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1. The power shaft is crucial for the operation of the machine.
动力轴对于机器的运行至关重要。
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2. The power shaft connection must be tight to prevent leakage.
动力轴连接必须紧固，以防止泄漏。
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3. The engineers carefully checked the power shaft connection before starting the engine.
工程师们在启动发动机前仔细检查了动力轴连接。