基本释义:

行行走起重机梁

网络释义

1)top running crane beam,行行走起重机梁

2)crane travel(l)ing gear,起重机行走机构

3)crane runway girder,起重机行车大梁

4)track driving tower crane,轨道行走式塔式起重机

5)grapnel traveling crane,锚钩式行走起重机

6)single-beam travel crane,单梁自行式起重机