Application effects of medium with different proportion of rotten peanut bran and sand were studied in tobacco seedling raising in the floating system.

将腐熟花生糠与河砂以不同比例混配成基质，研究其在烟草漂浮育苗上的使用效果。

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Product role: Lead is widely used in the proportion of sand fill, anti-toxic rays.

产品作用：铅砂广泛应用于比重填料，防有毒射线。

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This paper describes the effect of composition and granularity of silica sand on glass quality. Brings forward optimal mix proportion of silica sand from various ore-fields.

阐述了不同产地硅砂搭配使用过程中，硅砂成分及粒度组成对玻璃质量的影响，提出了硅砂最优化搭配方案。

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