您要查找的是不是：
- platinum wire dumbbell ball system 铂丝哑铃球系统
- dumbbell ball system 哑铃球系统
- The angle signal of the dumbbell ball torsion is magnified using light lever.In order to enhance the sensitivity and accuracy, CCD is used to probe the light signal spot. 采用光杠杆对哑铃球扭转的角度信号进行放大，由CCD对光点位置信号进行探测,以提高分析仪灵敏度和精度；
- 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。
- 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。
- A research on the system of platinum wire dumbbell ball in magnetomotive oxygen detector 磁动式测氧仪中铂丝哑铃球系统的研究
- 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。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- In cricket, the ball is delivered overarm. 打板球时，要举臂过肩掷球。
- 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。
- The drainage system has been aged. 排水系统已经老化了。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- 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。
- The loss of the ball game stir up much feeling. 球赛输了引起了极大的愤慨。
