②施工方人员不了解引压管卡套的结构原理，将前后卡套的顺序装反或是将前后卡套的各自方向装反；

The second is that the constructors are not so familiar with the structures and sealing principles as to make mistakes with the setting direction of the ferrules.

youdao

②施工方人员不了解引压管卡套的结构原理，将前后卡套的顺序装反或是将前后卡套的各自方向装反；

The second is that the constructors are not so familiar with the structures and sealing principles as to make mistakes with the setting direction of the ferrules.

youdao