For most old arch Bridges lack of original design and construction data, it is difficult to assess their bearing capacities accurately.

对于大多缺乏原始设计和施工资料的旧拱桥，很难对其承载能力作出准确的评定。

youdao

For most old arch Bridges lack of original design and construction data, it is difficult to assess their bearing capacities accurately.

对于大多缺乏原始设计和施工资料的旧拱桥，很难对其承载能力作出准确的评定。

youdao