design service life

基本解释

Variability in the development of barrier-free design service life of persons with disabilities.
多变性发展的无障碍设计服务于残疾人的生活。
With time going on, more and more bridges will reach or approach their design service life and the structural damages will appear because of kinds of reasons.
随着时间的推移，越来越多的桥梁将达到或接近其设计基准期，或因为各种原因发生结构性损伤。
On the condition that the design service life is confirmed, the design reliability level of the chemical structures should include the corrosive environment and its effect on the structures.
因此，在设计基准期预先确定条件下，化工结构的设计可靠度水平应综合考虑腐蚀性环境及其对建筑结构的影响特点来决策。