论述了目前立井提升防坠系统中防坠缓冲器存在的问题。

This paper discusses the Problems of the present anti-falling buffer in anti-falling system of vertical shaft hoisting.

youdao

论述了目前立井提升防坠系统中防坠缓冲器存在的问题。

This paper discusses the Problems of the present anti-falling buffer in anti-falling system of vertical shaft hoisting.

youdao