backward brush-lead是什么意思，backward brush-lead的翻译，backward brush-lead音标、读音、用法和例句

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backward brush-lead是什么意思，backward brush-lead的翻译，backward brush-lead音标、读音、用法和例句_流逝汉英词典

backward brush-lead

基本解释

专业释义

动力与电气工程