转换器 变频器 变换器 变流器转炉换流器变换炉转换头双频器变换反应器换能器转换堆变换机交换器转化器变送器
Converter, frequency converter, converter, converter, converter, converter, converter, converter head, dual-frequency converter, reactor, transducer, converter, reactor, exchanger, converter, transmitter
以上为机器翻译结果，长、整句建议使用 人工翻译 。