如果可避免有机溶剂的使用，将极大地促进新城疫病毒的活性。
The activity of Newcastle disease virus will be raised sharply if the organic solvents are avoided.
微波辐射辅助可以缩短反应时间，提高反应效率，减少溶剂的使用。
Microwave irradiation is able to shorten the reaction time, increase the yield of the Pechmann reaction, and decrease the amount of solvent.
近年来的研究主要集中在限制有机溶剂的使用或寻找新的、环境友好的替代品。
Recent studies have focused on the limiting the use of organic solvents and replacing them with new, environmentally benign media.
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