A new filtration technique for purification of carbon, stainless, high speed, low and high alloy steel castings in investment casting was investigated.
研究了在熔模精密铸造中过滤净化碳钢、低合金钢和高合金钢等铸钢件的过滤新技术。
Preparative high-speed counter-current chromatography(HSCCC) was used for the isolation and purification of solanesol from potato leaves.
采用超微回流提取方法提取土豆叶中的茄尼醇，用高速逆流色谱（HSCCC）对粗提物中的茄尼醇进行分离纯化。
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