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Unit Automatic Exchange | |||
dial telephone exchange; automatic telephone exchange; automatical telephone exchange | |||
telephone exchange | |||
automatic telephone exchange | |||
dial exchange | |||
automatic telephone switch board | |||
automatic telephone switchboard |
自动 电 话交换机: 22 phrases in 6 subjects |
Electronics | 3 |
General | 1 |
Hydroelectric power stations | 3 |
Technology | 12 |
Telecommunications | 2 |
United Nations | 1 |