初始缺陷和强度参数为设计变量，采用一阶矩法计算单元层的失效概率。
The initial imperfection and the strength parameters are considered as random variables. Ply-level failure probability is evaluated by the first order reliability method.
危险，但是，是通过令人惊讶的成功和需求，并创建一个市场失效初始提交项目有较短的时间跨越的观念。
The danger, however, is when the initial belief that the project had a short time span is invalidated by surprising success and demand, and the creation of a market.
结果表明初始焊接阶段电极磨损速率较大，点蚀加剧了电极磨损与失效。
The results showed that electrode wear rate was higher at beginning welds than later welds; pitting building at electrode surface accelerated electrode wear and invalidation.
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