短語詞組短語weight average particle size 質(zhì)量平均粒徑average particle size aps 平均粒徑cta average particle size cta 平均粒徑an average particle size 平均粒徑average particle size distribution 平均粒徑分布average size of particle 平均顆粒大小particle size average 粒度平均值;平均粒徑 返回 average particle size