短語詞組短語biased differential transformer protection 變壓器偏置差動保護longitudinal differential current protection 電流縱差保護micromachine differential -protection 微機差動保護microcomputer differential relay protection 微機差動保護pilot differential relay protection 縱聯(lián)差動保護D23 differential bus protection D23 母差保護differential voltage protection 差壓保護mirocomputer differential bus protection 微機母差保護differential bus protection 母差保護 返回 differential protection