一种做菜的材料可以被切成薄片、长条、碎片、方块、弧形、方丁、细粒或者碎馅。
The ingredients of a given dish can be cut into slices, strips, shreds, cubes, segments, dices, grains, or minced.
因此，为了开发新材料，找出研磨机制和生产超细粒子，了解球磨机中球的运动特点是非常重要的。
Therefore, understanding the behavior of ball movement in the mill is very important to identify the grinding mechanism and to produce ultra - fine particles for developing new materials.
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