UID:132153
UID:89996
UID:103344
UID:15851
UID:23141
UID:83091
UID:130769
图片:QQ图片20140826010414_副本.jpg
UID:80
UID:86738
UID:1144
UID:11969
UID:30012
UID:107028
UID:132117
UID:38421
yikki:存放的时候并没有交变应力,哪来的金属疲劳呢? (2014-08-26 13:22)
UID:129189
UID:108643
harvey.hung:這樣說也沒錯! 但是如果材料中存在瑕疵或裂縫,則會在長期受力下,因應力集中而增大。 (2014-08-26 13:25)
UID:11021
UID:130662
UID:8751
UID:90466
UID:130627