名词短语
中文翻译：分数级调绕组
同义词：
['fractional-pitch winding', 'fractional-pitch winding']
例句：
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1. The engineer designed the machine with a fractional-pitch winding to improve efficiency.
工程师设计了这台机器，采用了分数级调绕组以提高效率。
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2. The new model uses a fractional-pitch winding to reduce noise and vibration.
这款新型号使用了分数级调绕组来减少噪音和振动。
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3.The winding of the generator is carefully crafted to ensure optimal performance.
发电机的绕组制作得非常仔细，以确保最佳性能。