常見(jiàn)例句雙語(yǔ)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(huà)交換機(jī)過(guò)電流保護(hù)元件要求用低電阻率高性能的PTC陶瓷材料來(lái)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(wèn)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(huà)交換機(jī)過(guò)電流保護(hù)元件要求用低電阻率高性能的PTC陶瓷材料來(lái)制備。 返回 current limiter