Remark One or two singal-core cable not allowed laying in iron pipe.
一根或二根单芯电缆不允许敷设在铁质管道中。
When the barrier construction should be careful to not damage the cable, pavement laying pipelines and other facilities.
护栏施工时操作应谨慎，不得破坏路面下埋设的电缆、管道等设施。
II can clearly distinguish between the laying of the cable, do not use the wrong cable.
能明确区分要敷设的各种电缆，不要用错电缆。
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