基本解释[動力與電氣工程]信號極性轉換開關英汉例句雙語例句A convenient and an essential PHASE switch is included to allow for proper subwoofer signal polarity to be selected.一個既方便又一個重要堦段,包括開關,以便適儅的低音信號極性被選中。signal polarity switch更多例句专业释义動力與電氣工程信號極性轉換開關