English translation for "number-unobtainable tone"

(电话交换台)空号音

Related Translations:

unobtainable:  难获得的

unobtainable tone:  空号音

number unobtainable:  电话不能接通

number unobtainable tone:  被叫用户占线忙音，空号音空号音

number unobtainable trunk:  空号中继线

number unobtainable signal:  空号信号

number unobtainable connection:  空号接续

dark tone:  深调

answer tone:  应答音

gold toning:  金调色

Similar Words：

"number-one position" English translation, "number-plate light" English translation, "number-theoretic function" English translation, "number-theoretic functional" English translation, "number-theoretical method" English translation, "number]沉淀值" English translation, "number]亲水亲脂数值" English translation, "number]皂化值" English translation, "number]周转率" English translation, "numberalphabet" English translation