DIN 69101-2 : 1985被替代
GRAINS OF FUSED ALUMINIUM OXIDE AND SILICON CARBIDE FOR BONDED ABRASIVE PRODUCTS AND CHIP REMOVAL OPERATIONS WITH LOOSE ABRASIVE GRAINS; METHOD OF TEST OF MACROGRITS F4 TO F220
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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