电缆敷设时合理安排电缆敷设顺序，尽量减少电缆交叉。
Make sure of a reasonable arrangement for the cable laying orders, and furthest minimize the case of the cable frogging.
交叉电缆在学员小组(高度竞争的学员的一个重要特征)之间提供“气隙(Air Gap)”安全性。
The crossover cable provided "air gap" security between student teams, an important feature with highly competitive students.
伴热电缆的交叉：在易燃易爆场合必须采用配套的防爆直线型接线盒，一般场合也可以采用绞接或焊接。
Heating cable cross: must be used in explosive situations linear supporting proof junction box, the general situation can also be used splice or welding.
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