In this paper the boundary element method based on stress for solving the elastic problems of the plane is proposed.
本文提出了求解平面弹性问题的应力边界元法。
Based on project practice, this paper analyses several common quality problems of wooden floor, and introduces the main methods of solving and preventing them.
结合工程实践，提出了木地板中几个常见质量问题，并介绍了其主要处理方法和防治措施。
Solving authorization problems with system based on role and introducing concept of sub-role to solve problem of complex privileges and roles in NMS.
使用基于角色的系统解决了系统的授权问题，并且引入子角色的概念，解决了综合网管系统中角色和权限复杂繁多、不易分配的问题；
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