或许这个过程应正确地称为氟化.Perhaps the process should rightly be called fluoridation.异氰酸酯可由含氯的环(或非环)状分子氟化而得.The isocyanates can be obtained by the fluorination of nitrogenous cylic or acyclic molecules.在氟化过程中需要用一架 大功率 的电磁搅拌器.A heavy...
BPA ( brooks parsimony analysis ) is one of the most popular methods in the study of historical biogeography.BPA ( brooksparsimonyanalysis ) 是历史生物地理学研究的重要分析方法之一,在过去的20年内得以发展和完善.Capitals are increased by parsimony, and di...
He's mad about his biology teacher, but it's only puppy - love.他迷恋着生物学老师, 但那只不过是孩子的一片痴情罢了.Now many people love pets. And it's not just puppy love, either.现在许多人很爱宠物, 而且这不只是一种不成熟 、 短暂的爱.Nowadays puppy love i...