grinding rock

• 磨矿

grinding rock的用法和样例：

例句

1. Bowl mills have not been widely employed for phosphate rock to date.
   钵状磨矿机至今尚未广泛应用于磷矿的磨碎。
2. Besides, selective grinding was found to be suited for enrichment of macerals.
   此外，选择性磨矿方法也可以进行煤岩组分的分离与富集。