Design and operation experience has shown that, the transposition of high voltage transmission lines would weaken the mechanical strength and increase the cost of its construction and operation.
但设计和运行经验证明，高压线路完全换位会减弱线路的机械强度，并增加其建造和运行的费用。
Design and operation experience has shown that, the transposition of high voltage transmission lines would weaken the mechanical strength and increase the cost of its construction and operation.
但设计和运行经验证明，高压线路完全换位会减弱线路的机械强度，并增加其建造和运行的费用。
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