the half vertex angle was determined by particulate solid and hopper materials.
料斗半顶角由实际物料和料斗材料确定。
as in art, design a user spends lines, the design of a vertex angle spends kok decorated it with the entire room trying, the revitalization of the indoor atmosphere.
如在壁面上设计一弧型铁花线条,顶角设计一铁花角饰,它与整个居室相映成趣,活跃了室内氛围。
the reasonable ranges of the geometrical parameters are given by analyzing the influences of the vertex angle and cutting angle on impact force and penetration displacement.