英语语法分析

So it is necessary to do some further researches in thin-walled box girder, especially in multichambered thin wall box girder.

因而对于大跨径箱梁桥特别是多室薄壁箱梁进行进一步的探索，是很有必要的。

Multichambered Thin-walled box girder is a hyperstatic structure, it is a difficulty to solve its hyperstatic unknown shearing flow.

多室薄壁箱梁是超静定结构，求解其超静定未知剪力流是一个难点。