After column chromatographic separation, re-crystallization treatment and supercritical fluid precipitation treatment, the purity of lutein is improved.
粗提物经柱层析分离，重结晶，再经过超临界流体沉淀处理后，可提高叶黄素的纯度。
The distribution of typhoon precipitation presents the positive ad negative change as the gravity wave column wise under the influence of terrain.
台风降水受地形影响呈现出类重力波列式的正负相间的变化分布。
Settling column of fluidized bed and its applications in precipitation of high quality coarse diuranate are described.
介绍了流化床沉淀塔在沉淀优质粗粒重铀酸盐工业生产中的应用结果。
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