设计使用年限100年
Design Useful Life of 100 Years
平均年限折旧法
depreciation by composite life method
综合年限法折旧
depreciation by composite life method
定额比例折旧法
depreciation-proportional method on fixed base
后续设计使用年限
subsequent design working life
later workable lifetime
subsequent operational life
后续使用年限
subsequent design working life
continuous seismic service life
continuous seismic working life
加固设计使用年限
working life for strengthening design
design working life for strengthening of existing structure
平均寿年折旧法
depreciation-composite life method
寿年折旧法
depreciation-age-life method