利用刚性托架敷设电气线路是近年来发展起来的一种新型的敷线方法。由于托(?)多用于电缆线路的敷设,故习惯上称之为电缆托架。由于电缆托架具有对工艺变革的适应性强;安装及维护方便;托架及其零配件容易做到设计系列化、生产工厂化、供应商品化等特点,近年来在国外已获得了广泛地应 The use of rigid brackets for laying electrical lines is a new type of line laying method developed in recent years. Since the tray (?) is used for the laying of cable lines, it is customarily called a cable tray. Because the cable tray has strong adaptability to process changes; it is easy to install and maintain; the bracket and its spare parts are easy to design, serialize, manufacture, supply commercialization, etc., and have been widely used abroad in recent years. should