標(biāo)題: ASTM B 930-2003 硬質(zhì)鎢金額定粒度和反常大顆粒出現(xiàn)頻率... [打印本頁] 作者: 兌水 時間: 2009-9-15 15:26 標(biāo)題: ASTM B 930-2003 硬質(zhì)鎢金額定粒度和反常大顆粒出現(xiàn)頻率... B930-03 Standard Test Method for Rating Grain Size and Frequency of Abnormally Large Grains in Cemented Tungsten Carbides (Hardmetals)