名词
中文翻译：电刷
同义词：
['rotor', 'brush', 'commutator ring例句：1. The commutator is the part of the motor that moves the rotor back and forth.（电刷是电机中使转子来回移动的部分。）']
例句：
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1. The commutator is the part of the motor that moves the rotor back and forth.
电刷是电机中使转子来回移动的部分。
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2. The commutator was made from a special material to reduce friction.
电刷由特殊材料制成，以减少摩擦。
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3. The commutator was responsible for distributing the current evenly across the windings.
电刷负责将电流均匀地分布在绕组上。