Because the phreatic water surface is connected with atmosphere and its re-charge mainly comes from atmospheric precipitation, its movement is close impacted by atmosphere.
潜水面是与大气相通的，潜水的补给也主要是大气降水，潜水水流的运动与大气存在紧密的联系。
2
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。
3
But, as I said before, the precipitation was to re-start.