兑水 发表于 2009-10-30 08:08:49

ASTM E 389-2003 用4号筛(4.75mm)及较粗筛进行金属轴承...

E389-03 Standard Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Coarser for Metal-Bearing Ores and Related Materials
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