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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 6730.24-2006 |
Iron ores - Determination of total rare earth contents - chlorophosphonazo mA spectrophotometric method 铁矿石 稀土总量的测定 萃取分离-偶氮氯膦mA分光光度法 |
China National Standards chlorophosphonazo |
 English PDF |
| GB/T 223.49-1994 |
Methods for chemical analysis of iron，steel and alloy--Extraction separation-chlorophosphonazo mA spectro-photometric method for the determination of the total rare earth content 钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA分光光度法测定稀土总量 |
China National Standards chlorophosphonazo |
English PDF |
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