利用船体梁强度的单调退化特性，确定在设计寿命内船体强度的最小值。

Using the property of the monotonic degradation of the ship hull strength with time, the minimum value of the ship hull strength in the design lifetime can be easily determined.

youdao

对不同应力条件下的退化特性进行了详细的理论分析，对SOI NMOSFET ' S器件退化机理提出了新见解。

For different voltage stresses, a detail theory analysis on the degradation characteristics is presented. A new sight to the degradation mechanism in SOI NMOSFET's is provided.

youdao

“自然选择，特性的遗传变异和进化较慢的形式的退化” （查尔斯·达尔文）。

" Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms" (Charles Darwin).

youdao