rigid framework短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 刚性构架 Aiming at the main damage and its causes of a large-span continuous rigid framework bridge, the strengthening measure of adding the external cable to prestressed concrete box girder was introduced. 针对某大跨度连续刚构桥出现的主要病害及其原因，介绍了采取增设预应力混凝土箱梁体外索的加固措施。 dictall