grading rules的用法和樣例：
例句
- Grading and Standardization of Seed and Seedling of Glycyrrhiza uralensia Fisch.
烏拉爾甘草種子種苗分級標準制定。 - The administrative department for cultural relics of the State Council shall create grading rules and measures for examination and approval.
文物保護工程資質(zhì)等級的分級標準和審批辦法，由國務(wù)院文物行政主管部門(mén)制定。
