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1·Through large earthquake damage survey, we establish approximate treatment means on essential condition association coefficient of the same project.

通过对大量地震震害调查，建立了同一工程项目的基本条件关联系数的近似处理方法。

2·The investigation has proved that the ratio of the ferrite to austenite being approximate to 1 in the steel is possible by controlling its chemical composition and heat treatment condition.

研究证实，双相不锈钢通过成分和热处理的控制，使得铁素体和奥氏体两相比约为1是可能的，同时它具有优良的耐点腐蚀性能、耐应力腐蚀性能和耐冲刷腐蚀能力；