亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process.偶氮杂环丙烷是一类重要的 、 环内张力颇大的化合物.The diazirines are interesting , highly strained ring systems.在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.Under the opti...
Sexual harassment, that's against the law. Something should be done about it.性骚扰是违法的，应该对此采取一些措施。She suffered continual police harassment.她不断受到警方的骚扰。She often got telephone harassment at night these days.这些天她经常在夜晚受到电...
因为任何物体都是三维的,故应力状态总应按三向来讨论.A state of stress should always be described as triaxial since any body is three - dimensional.但其实是一幅三维的峡谷涂鸦作品.Actually it is a 3 D rift valley doodle work.就像宇宙空间一样, 海体也是三维的.Like outer space, th...
Whenever you criticize him, he always has an excuse.你批评他, 他总有说头儿.It's not appropriate to regard neutralism as eclecticism and then criticize or thoroughly abandon it.把“中立”当作折中主义而加以批判和彻底抛弃是不妥当的.He's always promp...