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 表2-4-2球狀夾雜氧化物尺寸,μm估計級別平均轉數Mr評級平均轉數Mr10~2021~3031~40~1.0~2.0~3.0269.260.229.20.5~1.01.5~2.02.5~3.0153.137.941~60~3.5~4.019.23.5~4.07.5 (共 133 字) [閱讀本文] >>