天车英文的缩写为Crown block。
双语例句：
1.重锤式防碰天车装置改进设计
Improved design on single hammer type anticollision crown block device
2.天车轨道梁熔透角焊缝工艺设计的几个问题
The problems of process design of penetration fillet weld of crown block track girder。
天车英文的缩写为Crown block。
双语例句：
1.重锤式防碰天车装置改进设计
Improved design on single hammer type anticollision crown block device
2.天车轨道梁熔透角焊缝工艺设计的几个问题
The problems of process design of penetration fillet weld of crown block track girder。
