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- maglev ball system 磁悬浮球系统
- An analysis and calculation of the suspension system of maglev ball by finite element method(FEM) and similarity principle is presented. 提出用有限元法及相似原理来分析、计算磁悬浮球的悬浮系统。
- Abstract： In order to research the maglev technique well, the principle of a maglev ball control system is analyzed, including deducing its math model and analyzing its stability. 摘要： 为了更好地研究磁悬浮技术，根据电磁学理论，对磁悬浮球控制系统的原理进行了分析，建立了控制系统的数学模型，进行了控制系统的稳定性分析；
- Then we discuss billiard trajectories in polyhedral angles, since it is well known that any hard ball system on a line is isomorphic to a billiard in an appropriate polyhedral angle. 然后我们讨论多面角里的台球轨迹，因为熟知直线上的硬球系统同构于适当的多面角里的台球系统。
- Analysis and Calculation of the Suspension System of Maglev Ball by Finite Element Method and Similarity Principle 用有限元法及相似原理分析计算磁悬浮球的悬浮系统
- A Review for Maglev Ball and Methods of Decreasing its Power Loss 磁悬浮球述评及降低其功耗的方法
- Designs of digital control of the maglev ball based on DSP 基于DSP磁悬浮球数字控制的设计
- loading-and-addition ball system 装补球
- The thesis mainly concerns hard ball systems on a line, billiard trajectories in polyhedral angles and period billiard trajectories in a plane convex domain. 本文主要讨论直线上的硬球系统，多面角里的台球轨迹，平面凸区域中的周期轨问题。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- He singled and went to second on a passed ball. 他击出一垒打，再因对方漏接而跑上二垒。
- In cricket, the ball is delivered overarm. 打板球时，要举臂过肩掷球。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- Public opinion was against the old feudal system. 公众舆论反对旧的封建制度。
- The system works on the principle that heat rises. 该项装置是按照热力上升的原理运转的。
- Children love to ball snow up in their hands. 小孩子们喜欢将雪在手里做成球儿。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- The drainage system has been aged. 排水系统已经老化了。
- She came out of her room equipped for the ball. 她盛装从房里出来预备到跳舞会去。
