... 电话交换电缆 telephone exchange cable 电话交换机 telephone exchanger 电话交换局 telephone exchange office ...
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电话程控交换机 telephone exchanger 程控交换机系统 PABX ; SPC Exchange ; electronic switching system ; spc switching system ..
基于1个网页-相关网页
wireless telephone exchanger 无线电话交换机
100 line telephone exchanger 门共电交换机
unitary common battery telephone exchanger 单式共电交换机
wireless telephone exchanger detail 无线电话交换机
program-controlled telephone exchanger 程控电话交换机
long distance telephone exchanger 长途电话交换机
manual telephone exchanger 人工电话交换机
line telephone exchanger 门共电交换机
automatic telephone exchanger 自动电话交换机
PTC element as over-current limiter for program-controlled telephone exchanger is one of the important application of PTC ceramic material.
程控电话交换机过电流保护元件要求用低电阻率高性能的PTC陶瓷材料来制备。
High performance PTC ceramic material with low resistivity is desired to prepare an over-current limiter for program-controlled telephone exchanger.
程控电话交换机过电流保护元件要求用低电阻率高性能的PT C陶瓷材料来制备。
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