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筛网目数和孔径对照表
GB2477-83新B40/3筛网号筛网孔尺寸（mm）丝径（mm）筛分率（%）目数（目/英寸）GB2077-81旧R10筛网号5#4.0001.000645.086#3.3500.800656.123.3500.630716.383.1500.800646.438#3.1500.560726.857#2.8000.710617.242.8000.560697.562.5000.630648.1210#2.5000.500698.478#2.3600.560658.702.3600.450719.0410#2.0000.5......
