grading standards

• 分级标准

grading standards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 measures for qualification accreditation and the grading standards shall be formulated by SBCR separately.
   资质认定办法和分级标准由国家文物局另行制定。