
Belt drives - Grooved pulleys for V-belts (system based on effective width) - Geometrical inspection of grooves
出版:International Organization for Standardization

专家解读视频
NF ISO 9980:1990 - Identical
NBN ISO 9980:1991 - Identical
KS B ISO 9980:2013 - Identical
KS B ISO 9980:2005 - Identical
GB/T 11356.2-1997 - Equivalent