英语词汇optional switch怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	optional switch
释义	optional switch oppositionaladj. 反对的,对抗的 nationalisticadj. 民族主义的；国家的；民族的 operationalizevt. 使用于操作,使开始运转,实施
随便看	timing techniques timing terminal unit timing toothed belt timing toothed belt shield timing toothed pulley timing toothed pulley camshaft timing toothed pulley crankshaft timing toothed pulley intermediate shaft timing track timing track circuit timing uncertainty timing unit timing valve timing verification timing verification system timing verifier timing voltage timing washer timing washers timing wave timing wave amplifier timing waveform timing wave generator timing weight Timini

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