第二章总结了国内外关于建筑物不同使用年限抗震设防标准的研究现状。
In chapter two, it summarizes the development and research on seismic fortification criterion of buildings in our country and overseas.
应根据不同设计使用年限活荷载的超越概率等于常规设计荷载超越概率的原则确定活荷的载标准；
The live load should be determined that the exceedance probabilities of live load for different design working life equal to that for conventional design loads.
达到报废标准后要求继续使用的，按审批程序办理，但可延长使用年限最长不超过10年。
After the rejection standard requirements to continue to use, by the examination and approval procedures, but can be prolonged use fixed number of year the longest do not exceed 10 years.
集团生产线的平均使用年限也已超过行业标准增至4.2年。
The average age of its line -up had risen to 4.2 years, elderly by the industry 's...
集团生产线的平均使用年限也已超过行业标准增至4.2年。
The average age of its line -up had risen to 4.2 years, elderly by the industry 's...
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