1. The technique of column-switching could alter the connections between injection valve and column, column and column, column and detector. 柱切换是指利用多通路切换阀改变进样阀与色谱柱、色谱柱与色谱柱、色谱柱与检测器之间的连接关系的技术。
2. The technique of column-switching could alter the connections between injection valve and column, column and column, column and detector. 柱切换是指利用多通路切换阀改变进样阀与色谱柱、色谱柱与色谱柱、色谱柱与检测器之间的连接关系的技术。
3. The technique of column-switching could alter the connections between injection valve and column, column and column, column and detector. 柱切换是指利用多通路切换阀改变进样阀与色谱柱、色谱柱与色谱柱、色谱柱与检测器之间的连接关系的技术。
4. Gas chromatography employs a column packed with either a solid stationary phase (gas-solid chromatography or GSC) or a solid coated with a nonvolatile liquid (gas-liquid chromatography or GLC). 气象色谱法以一根充填固体的柱子作为固定相（气—固色谱法或GSC）或是在固体上覆盖一层非挥发性液体（气—固色谱法或GSC）。
5. By us ing the methods of extraction of butyl alcohol, polyamide column chromatography, macroporous resin column chromatography. ?RESULTS? 利用正丁醇萃取、乙醇沉淀去杂质、聚酰胺柱层析及大孔吸附树脂柱层析等方法进行分离和提纯。
