电缆线结构可以防止电缆表皮破损时水进入电机中。
Cable structure can prevent the water into the motor when the cable skin damaged.
这些分子链彼此缠绕，形成缆线状的结构。
These strands of molecules twine around each other to form cable -like structures.
特别在城市中，由于电网结构的调整和城市规划的要求，电缆线路不断增加。
Especially in cities, for the requirement of network structure adjustment and city planning, the mount of cable line increases continuously.
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