Cyclopropane rings are included within larger systems, such as triterpenes.三元环包含在较大的环系统中,像三萜类中.Under the optimum condition the yield of isopropyl cyclopropane carboxylate is 92 %.在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.Cyclopropane car...
I will continue to write moral stories rhymed couplets.我仍然要写押韵对句的道德故事.The Chinese paste spring couplets on the gateposts when celebrating Spring Festival.中国人在庆祝春节的时候会在门柱上贴春联.a poem written in rhyming couplets用押韵对句写成的诗The...