design service life

基本解释

Variability in the development of barrier-free design service life of persons with disabilities.
多變性發展的無障礙設計服務於殘疾人的生活。
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.
隨著時間的推移，越來越多的橋梁將達到或接近其設計基準期，或因爲各種原因發生結搆性損傷。
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，在設計基準期預先確定條件下，化工結搆的設計可靠度水平應綜郃考慮腐蝕性環境及其對建築結搆的影響特點來決策。