名词
中文翻译：交流器
同义词：
['交流器，下切机例句：1. The commutator undercutting machine is used to adjust the speed of the motor.（交流器下切机用于调整电机的速度。）']
例句：
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1. The commutator undercutting machine is used to adjust the speed of the motor.
交流器下切机用于调整电机的速度。
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2.The commutator undercutting machine is an essential tool for electricians.
交流器下切机是电工必备的工具。
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3.The commutator undercutting machine was invented by a famous inventor.
交流器下切机是由一位著名的发明家发明的。