ONORM EN 28891-1991 Dental casting alloys with noble metal content of 25 % up to but not including 75 %《贵金属含量为25 %至75 %（但不包括75 %在内）的牙科铸造合金》.pdf

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YY 0626-2008 贵金属含量25%-75%的牙科铸造合金.pdf

NBN-EN 28891-1992 6875 Dental casting alloys with noble metal content of 25 % up to but not including 75 % (ISO 8891 1990)《贵金属含量至少为25%但低于75%的牙科用铸造合金（ISO 8891：1990）》.pdf

SIS SS-EN 28 891-1992 Dental casting alloys with noble metal content of 25 % up to but not including 75 % (ISO 8891 1990)《贵金属含量高达25 ％以上 ，但不包括75 ％的牙科铸造合金（ISO8891-1990）》.pdf

GOST ISO 8891-2011 Dental casting alloys with noble metal content of at least 25% but less than 75% Technical requirements Test methods《贵金属含量至少为25%但不低于75%的牙科用铸造合金 技术要求 试验方法》.pdf

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