名词
中文翻译：电池换向器
同义词：
['battery selector', 'battery switch']
例句：
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1.The new car has a battery commutator that makes starting easier.
这款新车有一个电池换向器，使启动更容易。
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2. The old model car had a mechanical battery commutator that was prone to failure.
旧款汽车有一个机械电池换向器，容易发生故障。
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3. The engineer replaced the worn-out battery commutator with a new one.
工程师用一个新的电池换向器替换了磨损的部件。