grading rules

• 分级标准,分级规则

grading rules的用法和样例：

例句

1. Grading and Standardization of Seed and Seedling of Glycyrrhiza uralensia Fisch.
   乌拉尔甘草种子种苗分级标准制定。
2. The administrative department for cultural relics of the State Council shall create grading rules and measures for examination and approval.
   文物保护工程资质等级的分级标准和审批办法，由国务院文物行政主管部门制定。