标识：UL 1423的电线上无标识。
广泛应用于电线线束，电缆中地线标识和特殊线缆或管材的标识。
It has been widely used for the identifications of wire harness, ground wires of cables. special cables or tubes, etc.
同时，传统的输电线路管理模式中主要由工作人员在图纸上画出电缆线的走向及分布，并把设备的属性及数据标识在纸上建立相应的档案。
Meanwhile, in the traditional management mode of the cables, people usually draw distribution map of the cables, and create archives to store the attributes of equipments and the related data.
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