miniature ball as a competitive sport teams

• 1. 竞技用球的内胆及该竞技用球 [P] . 中国专利： CN1323731C . 2007.07.04
• 2. 竞技用球的内胆及该竞技用球 [P] . 中国专利： CN1706514A . 2005-12-14
• 3. a competitive game between two teams who are in defence it is divided in two areas of competition structure of inner and outer.the marbles in the attack move with the aim to score a ball the ball base.le marbles of defence action of obstruction. [P] . IT8112023D0 . 1981-11-30

  机译： 防守中的两支球队之间的竞争游戏分为内部和外部两个比赛结构。进攻中的弹球移动，目的是将球打进球底。

• 4. A miniature imitates a sports competition for teams [P] . 法国专利： FR1238288A . 1960-08-12

  机译： 缩影模仿团队运动

• 5. Device for ejecting balls to train teams of players practicing e.g. team sports, has stop automatically returning to initial blocking position under action of elastic return unit and during tensioning or striking and releasing energy [P] . 法国专利： FR2989591A1 . 2013-10-25

  机译： 用于弹出球以训练例如团体运动，在弹性复位装置的作用下以及在张紧或撞击和释放能量时，停止装置会自动返回到初始阻止位置

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• 5. Evaluating Team Managers’ Knowledge and Attitude and Importance the Role of Sports Physiotherapy in Indian Foot Ball Teams [O] . Karthikeyan keyan 2019
• 6. Determination of particulate contamination in miniature ball bearings [R] . Harding, W B 1992

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