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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 40485-2021 |
Method of determining automatically the random reflectance of vitrinite in coal—Image analysis method 煤的镜质体随机反射率自动测定 图像分析法 |
China National Standards vitrinite |
 English PDF |
| GB/T 6948-2008 |
Method of determining microscopically the reflectance of vitrinite in coal 煤的镜质体反射率显微镜测定方法 |
China National Standards vitrinite |
English PDF |
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