死亡曲线逐渐上升，到65岁时成平稳状态。

The mortality curve ascends gradually to a plateau at age 65 .

youdao

此外，作者应该给说服测量的不平稳状态活动的原因。

Furthermore, the authors should give convincing reasons for measuring unsteady-state activity.

youdao

通过研究，建议采用垫座及锚索等加固措施，使大坝整体处于平稳状态。

By employing large concrete buttress and anchorages, the reinforcement measures are proposed for the stability of this arch dam.

youdao

From 1983 to the present as you just said, the economy has a long period of smooth, robust expansion interrupted by two very mild recessions.

第二时期是从1983年至今，正如你所说，经济长时间处于,平稳强健的发展状态,而只出现了两次轻度衰退。

斯坦福公开课 - 经济学课程节选