large-size cables 大截面电缆
Power Cables Structure & Size 电力电缆结构尺寸
size cables
大小的电缆
以上为机器翻译结果，长、整句建议使用 人工翻译 。
For a metropolis twice the size of another, the length of electric cables, number of gas stations and other bits of infrastructure decrease by about 15% per inhabitant.
ECONOMIST: Urban research
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