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GB/T 40643-2021 Determination of hyperoside in extract of crataegus pinnatifida leaf—HPLC 山楂叶提取物中金丝桃苷的检测 高效液相色谱法 - 中英文版 |
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GB/T 223.32-1994 Methods for chemical analysis of iron，steel and alloy--The hypophosphite reduction-iodimetric method for the determination of arsenic content 钢铁及合金化学分析方法 次磷酸钠还原-碘量法测定砷量 - 中英文版 |
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GB/T 14679-1993 Air quality--Determination of ammonia--Sodium salicylate-sodium hypochlorite spectrophotometric method 空气质量 氨的测定 次氯酸钠-水杨酸分光光度法 - 中英文版 |
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