polarity switch
短語詞組
- polarity reversal switch 極性開關
- polarity -reversing switch 極性轉(zhuǎn)換開關
- signal polarity switch 信號極性轉(zhuǎn)換開關;信號極性轉(zhuǎn)換
- automatic polarity switch 釋義自動極性開關
- signhas polarity switch 信號極性轉(zhuǎn)換開關
- current -polarity-reversal switch 電流極性換曏開關 返回 polarity switch