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筛网筛孔的卩m/网目数对照表（粒径目数换算表）网目数卩m280003670044750540006335072800823601017001214001411801610001888020830247002860030550325003542540380丁423554532548300502706025065230:702128018090160 10015011512512012012511513011314010915010616096170901758618080200752306224061250582705330048325454003850025600238001810001313401020006.550002.680001.6100001.3