| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 12690.4-2003 | English | 279 |
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Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides -- Determination of oxygen and nitrogen content -- Impulse-infrared and impulse-thermal conductance absorption method
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GB/T 12690.4-2003
| Obsolete |
GB/T 12690.4-2003
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