The total lance of long distance optical cable increases by 27000 sheet km, that of digital microwave links by 14,400 km and the number of telephone lines by 19.61 million.
新增长途光缆27000皮长/公里，数字微波干线14400公里，电话交换机容量1961万门。
The total lance of long distance optical cable increases by 27000 sheet km, that of digital microwave links by 14, 400 km and the number of telephone lines by 19.61 million.
新增长途光缆27000皮长/公里，数字微波干线14400公里，电话交换机容量1961万门。
A person trained in this field may need to know how to set up and maintain telephone equipment, voicemail systems, fiber optic and microwave communication links, as well as mobile radio equipment.
在这个方面受过训练的人可能要知道如何和维护电话设备、语音信箱系统、光纤和微波通信线路，以及移动通信设备。
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