The greatest advantage of the power-line network is that it covers a very wide range.
电力线网络的特点是它覆盖的范围非常广，各种建筑物内都有接入。
Ultra-high voltage transmission line will be the main frame of power network in China.
交流特高压输电线路是我国未来统一电网的骨架。
The telephone interference factor in the overhead line of power network.
交流网络架空线的电话干扰系数；
The telephone interference factor in the overhead line of power network.
交流网络架空线的电话干扰系数；
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