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Keyword [umpire-training]
Result: 1 - 3 | Page: 1 of 1
1.
Research On The Current Situation And Its Countermeasure To The Development Of Above-national-rank Umpire In Our Country
2.
Establishment On Muti-closed-loop Control System Of Training And Evaluation For International Blue Badge Umpires
3.
Exploration Of Table Tennis International Blue Badge Umpire Training Videos’ Research And Impact
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