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Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-[2] extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrometry
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Methods for chemical analysis of tantalum and niobium - Determination of carbon and sulphur contents
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Methods for chemical analysis of tantalum and niobium - Determination of iron, chromium, nickel, manganese, titanium, aluminum, copper, tin, lead and zirconium contents in tantalum
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Geometric size measuring methods of precious metals and their alloy materials
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Testing method for contact resistance of precious metals electrical contact materials
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Manganese ores--Determination of total iron content--Potassium dichromate titrimetric method and 110-phenanthroline spectrophotometric method
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The specification for industrial healthand safety technology in glass factory
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Speed meters for motor vehicle
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Speedometer for motor vehicle and motorcycle
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Strength requirement and test method of automobile seats,their anchorages and any head restraints
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