This paper discusses the most suitable design of the homocentric ball capacitor on the condition that the maximum pressure endurance is limited and the puncture field is strong 摘要讨论了在限定最大耐压值及介质的击穿场强的情况下，同心球形电容器的最佳尺寸设计。
2.
The optimum designs of a good and applied outer pressure tank structure of submarine ? quasi - homocentric structure , based on approximate analytical methods and finite element stress analysis method are made 提出了准同心圆式潜艇外部耐压液舱结构是一种优良实用的结构型式，给出了这种结构基于近似解析法和基于有限元应力分析的结构优化设计方法。
3.
Typical examples show that the results of quasi - homocentric structure are better than traditional structure , the results of finite element are better than that of approximate analytical methods , monolayer stiffened results are better than two - double longitudinals stiffened optimum results 典型实例表明，准同心圆式结构优化设计方案优于传统结构设计方案，基于有限元优化设计方案优于基于解析法的优化设计方案，液舱壳板单层加纵骨结构优化设计方案优于双层加纵骨结构优化设计方案。
4.
In part two , the optical spatiotemporal pattern in ring optic cavity is investigated . using delay feedback with spatial perturbation method , the system shows roll , square , hexagon , homocentric circle , " honeycomb " and " snowflower " pattern with different spatial perturbation functions . different patterns can be coexist and compete each other with the same perturbation function , which is the new character of this optical system with delay feedback 第二部分，利用延时反馈的空间微扰方法研究了环形腔中二能级介质的光学时空斑图的控制，在不同的微扰函数作用下，出现了滚筒状、四方形、六角形、蜂窝状、同心圆以及“雪花”状等不同的斑图，并且在相同的微扰函数下张胜海:博士学位论文出现了不同斑图之间的竞争，这种竞争是我们发现的这一具有空间微扰的延时反馈非线性光学系统光学斑图的新特征。
