acetone fractional precipitation 丙酮分级沉淀 extraction of rubidiumand cesium by fractional precipitation process 分步沉淀法提铷铯 ..
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丙酮分级沉淀
Acetone hierarchical precipitation
以上为机器翻译结果，长、整句建议使用 人工翻译 。
采用80%的酸性乙醇提取、硅胶柱层析分离、乙醚分级沉淀、丙酮重结晶的工艺方法，从苦参中分离得到氧化槐果碱单体。
Besed on the extract with 80% acidities alcohol, separation by silica gel, precipitation by ether, oxysophocarpine was obtained from Sophora flavescens.
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