Result: In optimal conditions, the yield of n - butyl gallate was over 93.8 %.结果: 在最佳实验条件下没食子酸正丁酯收率达93.8%.Iso - army gallate was synthesized by esterification of gallic acid with iso - army alcohol catalyzed by 4 - methy...
The washbasin had a small chip.脸盆边上有个小豁口。I've just made some chocolate-chip cookies.我刚做了些巧克力甜饼。We worked on and on, with Buzz writing it all into the memory chip.我们不停地忙碌着, 巴兹把我想知道的一切写到内存芯片里面.This company pioneered t...