名词
中文翻译：单轴
同义词：
['singular shaft', 'single shaft']
例句：
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1. The engineer designed a single shaft for the machine.
工程师为机器设计了一个单独的轴。
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2. The single shaft is essential for the operation of the machine.
单独的轴对于机器的操作至关重要。
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3. The single shaft was damaged during the construction process.
在建造过程中，单独的轴受损了。