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China 'GB/T 18115.4-2021
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NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
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GB/T 18115.4-2021
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Chemical analysis methods of rare earth impurities in rare earth metals and their oxides -- Part 4: Determination of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yt
稀土金属及其氧化物中稀土杂质化学分析方法 第4部分：钕中镧、铈、镨、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥和钇量的测定 |
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Issued Date:2021/10/11 |
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Implemented Date:2022/5/1 |
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Issued by: |
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The Standardization Administration of the People's Republic of China |
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