There shall be no slip and fall off in the sling hanging point, individual sling should be connected in the hoisting structure nodes, no cohesion in the main chord and web members on the middle.
吊索在吊点处不得有滑移和脱落，个别吊索应连接在被吊装结构的节点上，不得衔接在主弦杆中部和腹杆上。
2
To introduce and explain the structure and working method of a new type of fall-proof machine, used in small mine, which meets the weight demand of the hoisting system.
介绍一种新型可以满足小型矿井提升系统重量要求的防坠器结构设计和工作原理；
3
NTC fighters also celebrated the fall of Sirte by firing shots into the air and hoisting Libya's new national flag over what was the last stronghold of Gadhafi loyalists.