... 专用电话网 PTN ; PRIVATE TELEPHONE NETWORK 专用电话机 Exclusive telephone 使用专用电话线 dedicated phone line ...
基于32个网页-相关网页
短语
专用自动电话交换机
[通信]
private automatic branch exchange
;
private automatic telephone exchange
专用电话交换机
private telephone exchange
;
PBX
;
PBX private branch exchange
铁路专用电话交换机
railway telephone exchange
专用自动电话总机
pax unit
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