Playing field for a ball - or ball game practice apparatus.

• 1. 一种用于球类运动场的聚乙烯人造草坪自动化铺设机器 [P] . 中国专利： CN207244387U . 2018-04-17
• 2. 一种用于球类运动场的聚乙烯人造草坪自动化铺设机器 [P] . 中国专利： CN107237235A . 2017-10-10
• 3. Multi-part plant for the representation of a playing field for a the field foot ball corresponding ball game practice apparatus [P] . 德国专利： DE2651823A1 . 1978-05-18

  机译： 多部分植物，用于表示足球对应的球类练习装置的运动场

• 4. Base plate as a play - or. Roll surface for a ball - or ball game practice apparatus. [P] . 德国专利： DE1856927U . 1962-08-16

  机译： 发挥底板作用-或。球的滚动表面-或球类练习设备。

• 5. Ball game practice apparatus, in which the ball by means of vehicles is driven by means of the playing field [P] . 德国专利： DE1578628A1 . 1971-10-28

  机译： 球类游戏练习装置，其中，借助车辆通过运动场驱动球

• 1. Playing Business "Ball" with Cuba [J] . Yang Wei, Gong Liming 中国对外贸易（英文版） . 2007,第019期
• 2. Psychological Predictors of Intensive Practice of Massively Multiplayer Online Role-Playing Games [J] . Jessica, Marchetti, Carol, 心理学研究：英文版 . 2016,第011期
• 3. Articulation and Game Playing of the ICH Discourses in Folk Culture Field [J] . Zhu Shenghui, Wu Lingwei 当代社会科学（英文） . 2018,第001期
• 4. An Effort to Improve the Playing Skill Through the Application of Tool Modification in Small Ball Game: A Classroom Action Research [C] . Lukmannul Haqim Lubay, Andari Dewi Purnama International Conference on Sport Science, Health, and Physical Education . 2020
• 5. Polishing of 3/4 inch silicon nitride balls using the large-batch magnetic float polishing apparatus. [D] . Gerlick, Robert Edward. 2005
• 6. Influence of ball possession and playing position on the physical demands encountered during professional basketball games [O] . Davide Ferioli, Ermanno Rampinini, Marco Martin, 2020
• 7. Qualitative changes and controlling factors in ball sports: evidence from six-player field hockey games [O] . Keiko Yokoyama, Yuji Yamamoto 2009

• 1. COMPARISON ON REFINEMENT OF IRON POWDER BY BALL MILLING ASSISTED BY DIFFERENT EXTERNAL FIELDS [J] . L.Y. Dai12) B. Cao1) and M. Zhu1)* 1) School of Mechanical Engineering South China University of Technology Guangzhou 510640 China 2) Marine Engineering Institute Jimei University Xiamen 361021 China . 金属学报：英文版 . 2006,第6期
• 2. Research on the Internationalization Trend for the Development of Worldwide Competitive Ball Games and Our Countermeasures [J] . Yixin Ma . International Journal of Technology Management . 2015,第008期
• 3. 多功能移动式智能球类练习器的开发与应用 [C] . 周明华 ,付宏志 ,周靖坤 . 第八届全国体育工程技术大会 . 2017
• 4. 足球类垂直APP“懂球帝”的信息产品盈利模式构成机制研究 [A] . 张硕 . 2019