中密中砂
Medium dense and medium sand
以上为机器翻译结果，长、整句建议使用 人工翻译 。
岩石中的石英砂分选好，圆度和球度高，它们时稀时密地呈“悬浮”状散布在白云石砂屑沉积物中。
All sand grains are quartz sands. Sorting and roundness and sphericity of particles are in good grade-level. Quartz sands are scattered in microcrystalline dolomitic sands in floating state.
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