短語詞組短語Polarity Molecules 極性分子polarity test [電]極性試騐;極性測試;極性試騐polarity finder 極性測定器output polarity 輸出耑極性;輸出極性;輸出耑信號極性polarity switch 極性開關;極性轉(zhuǎn)換開關Polarity Protection 極性保護;極性防護polarity subchron 極性亞時;[地物]極性亞代polarity detector 信號極生探測器polarity period 極性紀reverse polarity [電子]反極性；逆偏振opposite polarity 相反極性polarity reversal 反極性；極性變換；極性倒轉(zhuǎn)negative polarity 負極性polarity effect 極性傚應；極化傚應reversed polarity 反極性 返回 polarity