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.当微量变形能使加载条件发生颇大改变时,就会产生颇大的差异.Appreciable differences may occur, however, when small deformations considerably alter the loading cond...
Jest with an ass and he will flap you in the face with his tail.你跟驴子开玩笑，将被驴尾打耳光。Why did people get in a flap over nuclear energy?...为什么人们对核能惶恐不安呢？Fossa cubitalis place can flap repeatedly, appear even slight gore.肘窝处可反复拍...
The candidates heeded Middletown.候选人重视中产镇.Like many workers, Ivelisse Rivera , a physician at Community Health Center stressed - out by mounting workloads.像很多上班族一样, 康涅狄格州Middletown市社区卫生中心的医生里韦拉(IvelisseRivera)被越来越多的工作压得喘...
The region began to use quinine successfully as a prophylactic.该地区开始成功地用奎宁作为预防剂。Epitope - based vaccines provide a new strategy for prophylactic and therapeutic application of pathogen - specific immunity.表位疫苗为用特定病原菌的免疫性...