grinding-balls的用法和樣例：
例句
- The non-equilibrium crystallizing processes and the characteristics of the metal mould nodular iron grinding ball have been discussed in this paper.
摘要用彩色金相法分析研究了金屬型球鐵磨球非平衡凝固過程和特性。 - The process to produce manganese-nodular-iron balls with phosphoricping iron, its features and economic profit are introduced.
介紹了利用高磷生鐵製取中錳球鐵磨球的工藝過程和特點及顯著的經濟效益。
