The result was that, even though the decision involved a number of untested changes, Edison agreed to hide the one inch diameter cable at least 2 feet below ground.
工结果，尽管含有一些未经测试的改动，爱迪生还是同意将直径一寸的电缆埋在地下至少两英尺处。
But a single optical fiber with a diameter of less than half a millimeter can carry more information than a large cable made of copper wires.
但是只一根直径小于半毫米的光纤电缆就可以比由铜丝制成的粗电缆承载更多的信息。
The key factors which affect the dynamic packoff of the cable with big diameter are analysed and calculated in theory.
对影响大直径电缆动密封的各种因素进行了分析和理论计算，提出了推广应用此项技术应注意的关键因素。
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