central battery telephone

telephone ... carrier system telephone 载波制电话 central battery telephone 共电制电话机 city telephones 市内电话 ...

机械专业英语... ... central battery [共电制]中央电池组 central battery telephone 供电制电话[机] central bearing 中间轴承 ...

... ) central battery telephone 共电式电话 ) common-bettery office,central battery telephone exchange 共电式电话局 ...