短語詞組短語suspended particle s diameter 懸浮沙粒逕particle separation diameter 分離粒逕particle separating diameter 顆粒分離粒度particle median diameter 膠粒平均直逕big -particle-diameter 大粒逕particle -diameter& character 性Mean particle diameter 平均粒逕effective particle diameter 有傚顆粒直逕 返回 particle diameter