grain fineness number中文,grain fineness number的意思,grain fineness number翻译及用法 2026-05-06 09:34 浏览次数 15 grain fineness number英[ɡrein ˈfaɪnnɪs ˈnʌmbə]美[ɡren ˈfaɪnnɪs ˈnʌmbɚ]砂粒细度指数;晶粒度;平均粒度