
BS ISO 3160-2 - WATCH-CASES AND ACCESSORIES - GOLD ALLOY COVERINGS - PART 2: DETERMINATION OF FINENESS, THICKNESS, CORROSION RESISTANCE AND ADHESION
出版:British Standards Institution

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BS ISO 3160-2 - WATCH-CASES AND ACCESSORIES - GOLD ALLOY COVERINGS - PART 2: DETERMINATION OF FINENESS, THICKNESS, CORROSION RESISTANCE AND ADHESION
出版:British Standards Institution
專家解讀視頻