material classification

• 材料分类

material classification的用法和样例：

例句

1. Materials ledger cards for each type of material or factory supply used make up the subsidiary record.
   为每壹类原料设置的材料分类卡构成了辅助记录。
2. This paper discusses the classification and application of the Long-Lasting Phosphorescent Materials and the latest research progress in luminescent ceramic glaze.
   论述了长余辉发光材料分类及应用和陶瓷发光釉最新的研究进展。