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...
他谦逊地说，念中学时他曾经是游泳冠军。He had been, he said modestly, swimming champ at high school.回过来谦逊地坐上那只空凳子.He took the vacant seat with an air of apology.白云谦逊地站在天之一隅.The cloud stood humbly in a corner of the sky....