Abstract :Due to the limitation by the inherent characteristics of the conventional closed tray ,the problems and contradictions revealed in the actual application thereof are increasingly prominent ,
弯曲弹簧电缆桥架标准-JB-T10216-2000-(1)LT灯管支架在同一垂直面以不同的角度分开三个方向,向下连接托盘、梯架的部件。3.1.13 垂直四通 crose mounted in the vertical plane running个人信息管理系统在同一垂直面以不同的角度分开四个方向连接托盘、梯架的部件。3.1.14 耐火电缆桥架 cable tray system resistanc