safety class structure

基本解釋

The safety class of building structure of this project is II and the design working life is 50 years.
本工程建筑結(jié)構(gòu)安全等級(jí)為二級(jí)，設(shè)計(jì)使用年限為50年。
Computation results show that reliability index of gate component strengths conforms with safety standards of the first class structure.
計(jì)算結(jié)果表明，閘門構(gòu)件強(qiáng)度可靠指標(biāo)基本滿足一級(jí)建筑物安全水準(zhǔn)。
The basic principle, usage of air blowing based level detection, and the structure and application of UCA(H) type nuclear safety class air blowing device are described briefly.
簡述吹氣法檢測液位的基本原理、用途以及UCA（H）系列核安全級(jí)吹氣裝置的結(jié)構(gòu)和應(yīng)用。