change-over knob是什么意思，change-over knob的翻译，change-over knob音标、读音、用法和例句

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change-over knob是什么意思，change-over knob的翻译，change-over knob音标、读音、用法和例句_骑士汉英词典

change-over knob

基本解释

专业释义

测绘科学技术