The transitions of bisphenol A and phenolphthalein oligo -- polysulfones were inves - tigated by DSC.本工作用示差扫描量热法(DSC)研究了双酚A型和酚 酞 型两种聚砜预聚物的转变.Forbidden transitions are those for which dipole radiative transitions are not ...
Both ionization and excitation lead to eletronic transitions that may be the emission of light.电离和激发都将导致可能伴随有光发射的电子跃迁.Forbidden transitions are those for which dipole radiative transitions are not allowed by the selectio...
那本词典是个巨大的信息宝库。The dictionary is a vast treasure trove of information.拥有一座藏满了珍贵记忆的宝库真是令人欣慰。It is comforting to have a storehouse of treasured memories.这本书是名副其实的信息宝库。This book is a veritable storehouse of information....
He was a slim, solemn, darkly handsome young man.他是个身材修长、表情庄重、皮肤黝黑的帅小伙。Erica was solemn, pulling at her blonde curls.埃丽卡表情严肃，扯着自己卷曲的金发。His face suddenly turned solemn, his voice confidential.他脸上的神情突然严肃起来，声音也压低了。...