The team'stereoisomerism " however, is generally restricted to mirror image isomerism.然而 “ 立体异构”一词通常只限于镜象异构.A rather more complex case is that of steric isomerism.更复杂的情形是立体异构问题.It realized the isomerism form to have...
取120个值计算平均数。Take a hundred and twenty values and calculate the mean.把它们相加再除以5就是平均数，明白吗？Add them together, divide by five, and you've got the average. Okay?在新英格兰人们的收入通常比全国平均数低10%.Income in New England is commonly 10 ...
在桌上的书堆中间有本皮面装订的小书.Among the books on the table was a small one bound in leather.这本小书是他法文课中用来引起学生兴趣的花样.This little book is the window dressing for his French course.我们阅读了故事小书上的这一则:复活节-寻蛋游戏.We read about the Easter Egg Hun...