短語詞組短語reversed polarity 反極性Reversed Polarity Test 反極性測(cè)試control field reversed polarity 控制磁場(chǎng)反向極性Gilbert reversed polarity ehron 吉爾伯特反向極性時(shí)Matsuyama reversed polarity chron 松山反向極性時(shí)reversed polarity direct current 反接直流reversed polarity belt 反極作用reversed polarity machining 負(fù)極性加工exciter reversed polarity 勵(lì)磁器反向極性 返回 polarity reversed