pulley block造句怎么写

1、doubleiron pulley block

3、Steel column is fixed to special jig, slipping below the installation position by chain block and lifting by pulley block and windlass.

5、Safety requirement for lifting pulley blocks

7、The ends of the wire ropes are respectively connected on suspension cages through fixed pulley blocks respectively installed on a headframe.

4、Equivalent triangle structure is constructed with hinged bar elements to precisely simulate the effect of wire rope pulley block in the finite element analysis of structure of construction machines.

2、The lower part of a pulley block.

6、The individual strands of each cable were hung in pulley blocks.