The progresses in five - membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed. 综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用.
He's bronzed from a short holiday in California.他在加利福尼亚度过了一段短暂假期，皮肤晒成了古铜色。Gerald bronzed in the face and travel - stained from head to foot.杰勒德面孔晒得黝黑黝黑,从头到脚风尘仆仆.A blush mantled over the bronzed cheek of the gladiato...
蚕孵出后食桑叶.Silkworms are fed mulberry leaves after they have hatched.他们靠养蚕等增加了收入.They increased their income by raising silkworms and so on.养蚕是为了得到蚕丝.Silkworm culture is practised in order to get silk....
Mediastinoscopy a limited role in patient selection for extrapleural pneumonectomy.而纵隔镜检查对于选择胸膜外全肺切除术的病人仅仅有着有限的作用.Objective To study the improved extrapleural thoracoplasty in the treatment of chronic tuberculous empyema...
Her work involved more than administration of first aid to the wounded.她的工作不仅是对伤者的急救.We all know first aid.我们都会急救.Always keep a first - aid kit handy .手边要经常有个 急救箱....