目前国外广泛使用的清洗方法是紫外清洗，它一方面能避免由于使用有机溶剂造成的污染，同时能够将清洗过程缩短。
At present extensive use clean method is ultraviolet light clean, on one hand it can avoid pollution because of use organic solvent, meanwhile can abbreviate clean process.
该合成工艺操作简便，收率较高，在加成反应中避免使用有机溶剂。
This synthesis had the advantages of easier operation, higher yield, and avoided using organic solvents in the addition procedure.
结果表明，当两者具有相同的提取效果时，亚临界水提取法的提取时间及提取溶剂的消耗量大大减少，避免了使用有机溶剂造成的污染。
Compared to the conventional organic solvent extraction method, the subcritical water extraction method showed shorter handling time and lower solvent consumption without waste producing.
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