在电磁媒体中，重复克服衰减引起的空间电磁场散度或电缆损失。
In electromagnetic media, repeate overcome the attenuation caused by free-space electromagnetic-field divergence or cable loss.
但是一些人却在质疑这个标准，因为从远距离传输来看，高压直流电缆损失的电量比交流电缆少。
Some people, however, question that standard because over long distances high - voltage DC lines suffer lower losses than AC.
在地下埋设电缆造成的损失是空中架设的40倍。
This creates losses 40 times higher in a buried cable than in an aerial one.
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