But the seismic performance of the masonry walls isn't researched systemically, and this makes a new project design and assessment of existing building structures lack of basis.

但由于国内对该类墙体的抗震性能未进行系统的研究，使新建工程的设计和已建工程的评估缺少依据。

youdao

But the seismic performance of the masonry walls isn't researched systemically, and this makes a new project design and assessment of existing building structures lack of basis.

但由于国内对该类墙体的抗震性能未进行系统的研究，使新建工程的设计和已建工程的评估缺少依据。

youdao