箱梁的英文：
box girder

参考例句：

Each succeeding fabricated box is erected on trolleys
每段预拼的箱梁安装在小平车上。

box是什么意思：
n. 盒；一盒的容量；包厢；岗亭
v. 把...装箱；加框于

A knockout, as in boxing.
击倒对手的一击，如在拳击等比赛中

Screw on the box.
在箱子上刻螺纹。

Stop the overflow from the box till the box is repaired.
止住水使之不再从盒子中溢出，直到把盒子绣好了。

The box shut with a snap.
箱子啪地一声关上了。

boxed heart check
心材开裂,成材心裂

girder是什么意思：
n. 梁

A steel girder may warp in a fire.
钢梁遇火会变弯。

To support from below,as with props,girders,or masonry.
加强…的基础从下面支撑，如用支柱、梁或砖石建筑

Compatibility will require that the girder deflection at B be zero.
根据协调性的要求，梁在B点的挠度应为零。

A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength.
内龙骨固定在船或舟的龙骨之上或与之平行的木材或桁，以加强船的力量

All girders shipped by rail were arranged on a flatbed rail car
由火车装运的所有主梁都安放在平板火车车皮上。