名词
中文翻译：奈皮尔差速螺旋齿轮
同义词：
['differential gear', 'differentialshaft', 'differential gearbox']
例句：
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1. The car's steering systemuses Napier's differential screw steeringgear to improve handling.
汽车的转向系统使用奈皮尔的差速螺旋齿轮来提高操控性能。
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2. Theengineer designed the differential gearfor the new machine.
工程师为新机器设计了差速齿轮。
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3.The differential gear is crucial for maintaining thesmooth operation of the vehicle.
差速齿轮对于保持车辆平稳运行至关重要。