A coarser grade of iron will lower the yield of ferrocene.粗粒的铁将降低二茂铁的产量.These receptors include bridged dipyrrole ansa - ferrocene, bipyrrole - based catenanes , guanidinium - appended amidopyrroles, 2,5 - diamidopyrrole...
Most people's faces are asymmetric.大多数人的脸不对称。We have made no reference to asymmetric carbon atoms.我们未曾涉及不对称碳原子.Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不...
British aristocrat and boxing promoter who formulated the Marquis of Queensbury rules ( 1867 ) to govern boxing.英国贵族,拳击运动的促进者,他制定了昆斯伯里伯爵规则 ( 1867年 ) 来管理拳击.Aaron Copland was an energetic promoter of American music.阿伦·科普兰从...