·2,447,543篇论文数据，部分数据来源于NoteExpress
用于直埋、工井或隧道内敷设的两段电缆连接，电缆金属护套可直接连接，也可交叉连接。
For connection of two sections cable in direct burial, working well or tunnel, the cable metal bushing can be connected directly, and also can be connected across.
youdao
应用推荐
模块上移
模块下移
不移动