现行

GB/T 5751-2009

中国煤炭分类
Chinese classification of coals

2009-06-01

现行

GB/T 5751-2009

Chinese classification of coals

2009-06-01

现行

GB/T 17607-1998

中国煤层煤分类
Chinese classification of seam coals

1998-12-08

现行

GB/T 16772-1997

中国煤炭编码系统
Codification systems for Chinese coals

1997-04-17

现行

GB/T 17296-2009

中国土壤分类与代码
Classification and codes for Chinese soil

2009-05-06

现行

KS E ISO 11760(2018 Confirm)

석탄의 분류
煤炭分类

2008-12-26

现行

KS E ISO 11760

석탄의 분류
煤的分类

2022-11-25

现行

ISO 11760-2018

Classification of coals
煤炭分类

2018-11-22

现行

BS ISO 11760-2018

Classification of coals
煤的分类

2018-11-29

现行

GB/T 20093-2022

中文新闻信息分类与代码
Classification and codes of Chinese news information

2022-10-12

现行

MT/T 803-1999

煤中砷含量分级
Classification for arsenic in coal

1999-03-24

现行

MT/T 967-2005

煤中锗含量分级
Classification for germanium in coal

2005-09-23

现行

MT/T 964-2005

煤中铅含量分级
Classification for lead in coal

2005-09-23

现行

MT/T 1029-2006

煤中镉含量分级
Classification for cadmium in coal

2006-11-02

现行

MT/T 965-2005

煤中铬含量分级
Classification for chromium in coal

2005-09-23

现行

MT/T 963-2005

煤中汞含量分级
Classification for mercury in coal

2005-09-23

现行

MT/T 966-2005

煤中氟含量分级
Classification for fluorine in coal

2005-09-23

现行

MT/T 1028-2006

煤中硒含量分级
Classification for selenium in coal

2006-11-02

现行

GB/T 37975-2019

汉语言文化学习资源分类
Classification of Chinese language and culture learning resources

2019-08-30

现行

GB/T 35568-2017

中国荷斯坦牛体型鉴定技术规程
Code of practice of type classification in Chinese Holstein

2017-12-29