投球手会投出各种难度刁钻的球，看你在规定时间内能打出多少本垒。
Netball hands cast various difficult tricky problems for the ball, and it is up to you in a specified time to make the number of home base.
一个简单的棒球游戏，投球手会投出各种难度刁钻的球，看你在规定时间内能打出多少本垒。
A simple baseball game, netball hands cast various difficulties tricky problem for the ball, it is up to you in a specified time to make the number of home base.
当磨机参数一定时，可根据计算的冲击功选择磨球材料，从而确定磨球的尺寸。
The ball material selection can be based the parameters of mill thereby working out the dimensions of mill.
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