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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 14949.11-2021 |
Manganese ores—Determination of carbon content—Gravimetric method and infrared absorption method 锰矿石 碳含量的测定 重量法和红外线吸收法 |
China National Standards Manganese ores—Determination carbon |
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