A、比例极限 <img src='https://tiw.cn/files/2014-11/yangjieqing/2014111318311771023.png'>
B、屈服极限 <img src='https://tiw.cn/files/2014-11/yangjieqing/2014111318312598156.png'>
C、强度极限 <img src='https://tiw.cn/files/2014-11/yangjieqing/2014111318313357720.png'>
D、许用应力 <img src='https://tiw.cn/files/2014-11/yangjieqing/2014111318314521872.png'>
查看答案