1. 提出多层不等厚可看成是圆柱壳壳壁上的几何缺陷，在一定程度上会减弱经典圆柱壳的屈曲临界应力水平。
The character of unequal-thickness was considered as geometrical defect, which decreases the critical stress of classical shell buckling to some extent.
2. 我特别喜欢童童和壳壳，他们都是我的好朋友！
I like TongTong and KeKe very much! They are both my good friends!
3. 911查询·英语单词
3. 我家里就有两只乌龟，它们的名字叫童童和壳壳。
There are two tortoises in my home, their names are TongTong and KeKe.