Remember that when both of you were in need, I was the one who loaned you money.记住，在你们两个都有困难的时候，是我借钱给你们的。Johann Fust , a local venture capitalist, loaned him 800 guilders in 1450.约翰·福斯特, 一位当地的资本家, 1450年贷给他800荷兰盾.Securiti...
Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.The dipolar layer is consisted of the latent electrostatic image and toner attracted on it.这偶极层...