In this paper a new method for making circularvariable density filters is proposed.
本文提出一种制备圆形渐变衰减片的新方法。
2
The complex variable method analytic solution of stress is given for the plane elastic stress problem of surrounding rock of shallow circular tunnel under ground load.
采用复变函数解法，研究地面荷载作用下浅埋圆形隧道围岩的平面弹性应力问题。
3
The solutions of a large deflection problem of thin orthotropic circular plates with variable thickness under uniform pressure and under concentrated load are obtained in this paper.