英语语法分析

A mean strain or prestrain, as in FIG. 83, can under certain conditions reduce the subsequent fatigue life.

一个如图83所示的平均应变或预应变，在某种情况下，能够缩短以后的疲劳寿命。

The results show that low cycle fatigue life is reduced and cyclic stress is raised by torsional prestrain raising.

结果表明，扭转预应变降低低周疲劳寿命，循环应力随扭转预应变的增大而增大。

The experimental method for determine the subsequent yield condition of a sheet with plastic prestrain is introduced.

本文介绍了确定具有塑性予应变板材后继屈服条件的实验方法。