It's a guide to design, use and repair of ElectronicTelephone set.
对电子电话机的设计、使用和维修具有指导意义。
2
An electronictelephone makes it possible for you to answer. two calls at the same time by switching back and forth between the two calls.
通过来回转换开关,电子电话使你有可能同时收听两个电话。
3
The daily affairs module is comprised of electronictelephone book module, user booking module, establishment booking module, file sharing module, electronic mailbox module.