main girder

• 主梁

main girder的用法和样例：

例句

1. The main girders support I-section transverse ribs.
   主梁支承着工字梁的横向肋。
2. Often lack of fusion adjacent to the girder web in the transverse groove welds led to the cracking.
   在靠近主梁腹板的横向坡口焊缝处常常出现未熔透而导致裂纹。