The natural shale was made into good performance ceramsite filter by ball making, and breaking processes.
以天然页岩为原料,分别采用破碎法和成球法制成滤料生料,经焙烧, 膨胀,制备了陶粒滤料.
The screwball is the most difficult breaking ball to pitch, as it goes against the natural arm motion of the pitch.
螺旋球是最难投的变化球,因为它与胳膊在投球时的自然运动相反。
Solve the ball-passing problem in the process of fast-breaking and reduce lapses and improve the ability of fast-breaking and getting points; at the same time strengthen the awareness of rebounding and improve the ability of defending the rebounds. 4.
解决好各快攻阶段的传接球问题,减少无谓的失误,切实提高快攻的得分能力;同时还要加强抢篮板球意识的培养,并提高保护篮板球的能力。
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