例句與造句

1. In accordance with the driving characteristics of ac driving locomotive , the working status of its traction transformer is analysed . the questions that should be considered in the traction transformer design of ac driving locomotive are mentioned . these questions are the large short - circuit impedance of traction winding , higher harmonic current , over - excitation and dc magnetization caused by large variation of the network voltage , etc . some disposal methods are given
   針對交流傳動電力機車的傳動特點，對其中的牽引變壓器的工作狀態(tài)進行了分析，指出交流傳動電力機車用牽引變壓器設(shè)計時需考慮的牽引繞組的短路阻抗大、電流的高次諧波、網(wǎng)壓波動大可能引起的過勵磁以及直流磁化等問題，同時給出了相應(yīng)的一些解決方法。
2. It's difficult to find short-circuit impedance in a sentence. 用short-circuit impedance造句挺難的