常見例句雙語例句PTC element as over-current limiter for program-controlled telephone exchanger is one of the important application of PTC ceramic material.程控電話交換機過電流保護元件要求用低電阻率高性能的PTC陶瓷材料來制備。The fault-current limiter (FCL) problems and the background of this thesis are summarized in the first chapter, as well as what's this thesis does.首先,本文概述了故障限流器的研究現(xiàn)狀、存在問題以及本文所作的工作。High performance PTC ceramic material with low resistivity is desired to prepare an over-current limiter for program-controlled telephone exchanger.程控電話交換機過電流保護元件要求用低電阻率高性能的PTC陶瓷材料來制備。 返回 current limiter