The results showed that Yb ( OSO 2 C 8 F 17 ) 3 and C 10 F 18 were the best catalyst and fluorous solvent respec - tively.研究表明Yb ( OSO2C8F17 ) 3和C10F18分别是最好的氟代催化剂和氟溶剂.The FBC ( fluorous biphase catalysis ) is a new nonaq...
These costs may be counterbalanced by the advantages of simplified fabrication, erection, and added aesthetics.这些开销可由简化制造与安装及增添美观等优点来补偿.The erection of this framework took only a few minutes.架设这个框架只需几分钟.Its lower end is ...