Harrys quidditch marvelous world , to the player plays the protagonist one of the team goalkeeper . said tournament , a good sector to the top half of teams , in fact , he quidditch matches as well . game , the player needs a total of three different positions guarding the goal , the other players will throw the ball over the dangchu january 1 , method is very simple , mo 游戏中，玩家总共需要守护三个不同位置的球门，将对方球员投射过来的球一一挡出，方法非常简单，移动鼠标可以控制画面上方飞行的球员，三个空心圆柱即表示球门，当有对方球员向我方球门飞来，并投出球后，用最快速度让本方球员移动到球所飞向的球门处，点击鼠标左键，将来球击飞即可。
Some problems from the principal stress axis rotation experiment with hollow cylinder apparatus are analyzed in detail herein ; which consists of three aspects , such as the preparation of the hollow cylinder sample and the acquisition of the isotropic one ; the estimation and elimination of the size effect and the end effect in the experiment ; and the membrane penetration effect on both the drained and the undrained tests results , etc 摘要详细分析了采用空心圆柱仪进行主应力轴旋转试验遇到的若干问题，主要包括三个方面：空心圆柱试样制备及各向同性试样的获得；试验中尺寸效应、端部效应的考虑与消除；空心试样膜嵌入效应对排水、不排水试验结果的影响等。
