求翻译：摘要：超临界流体萃取分离过程的原理是超临界流体对脂肪酸、植物碱、醚类、酮类、甘油酯等具有特殊溶解作用，利用超临界流体的溶解能力与其密度的关系，即利用压力和温度对超临界流体溶解能力的影响而进行的。在超临界状态下，将超临界流体与待分离的物质接触，使其有选择性地把极性大小、沸点高低和分子量大小的成分依次萃取出来。当然，对应各压力范围所得到的萃取物不可能是单一的，但可以控制条件得到最佳比例的混合成分，然后借助减压、升温的方法使超临界流体变成普通气体，被萃取物质则完全或基本析出，从而达到分离提纯的目的，所以超临界流体萃取过程是由萃取和分离组合而成的。是什么意思？

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Summary: The super-critical fluid extraction separation process is the principle of supercritical fluid alkali plant fatty acids, and ethers, ketones, esters, glycerine with a special solvent, use of supercritical fluid ability to dissolve the relationship between density, pressure and temperature,

Abstract: The supercritical fluid extraction separation process principle is the supercritical fluid to the fatty acid, the plant alkaloid, the ether class, the ketones, the glycerine ester and so on has the special dissolution, if uses the supercritical fluid dissolving capacity the density relatio

Summary: supercritical fluid extraction process is the principle of supercritical fluid on plant fatty acids, alkali, ethers, ketones, special dissolved role of glycerides using supercritical fluid relationship between solvency and its density, namely, the use of pressure and influence of temperatur

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