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日本S进口钢球丝杆导轨专用3.175 3.5718 3.969 4.762 5.1594MMu.
氧化锆陶瓷球3.175/3.5/3.969/4.5/4.763/5.000/5.1594/5.556
日本AKS进口钢球丝杆导轨专用3.175 3.5718 3.969 4.762 5.1594MM
4.5/4.763/5.000/5.1594/5.556/5.953/6.000滚珠Si3N4氮化硅陶瓷