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氧化锆陶瓷球 11.906 12 12.303 12.7 13.494 14.288 15 15.01mm
氮化硅陶瓷球 11.1125 11.113 11.509 11.906 12 12.303 12.7mm
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氮化硅陶瓷球 11.509/11.906/12.303/12.7/13.494/14.288/15.081
氮化硅陶瓷球 12.303 13.494 14.288 15 15.010 15.081 15.875 16
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11.1125/12.0/12.303/12.7/15.081氮化硅陶瓷球G5精度
