名词
中文翻译：内部销钉轮
同义词：
['internal gear', 'internal hub', 'internal sprocket']
例句：
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1. The internal pin wheel is essential for the smooth operation of the machine.
内部销钉轮对于机器的顺畅运行至关重要。
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2.The engineer carefully adjusted the internal pin wheel to ensure optimal performance.
工程师仔细调整了内部销钉轮，以确保最佳性能。
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3.The internal pin wheel was replaced due to wear and tear, which improved the machine's efficiency.
由于磨损，内部销钉轮被更换，从而提高了机器的效率。