“grain size analysis”的概念、定义、翻译、参考文献-科学参考

单词	grain size analysis
释义	grain size analysis Encyclopedia 理学有机分析释 grain size analysis颗粒分析微观粉体颗粒的物理化学分析的总称。物理分析包括颗粒的粒径、粒型、颜色、湿度、密度和水分等。化学分析包括：化学含量、pH、电导率等。颗粒分析也指用实验的方法测定土的粒度成分。分析方法很多，最常用的有筛分法，适用于砂粒以上较粗的颗粒；移液管法和密度计法，适用于粉粒以下的较细颗粒。
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