The progresses in the synthesis study of isoamyl isovalerate at home and abroad were reviewed.综述了国内外对异戊酸异戊酯的合成研究的进展情况.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正...
Electrization , Automation and Integration are irresistible general trend of the development of modern logistical industry.物流的电子化 、 自动化和一体化是现代物流发展的必然趋势.With the development of railway electrization the requirement about ...
She puzzled over the postmark on the letter.她想弄明白信封上的邮戳.I see from the postmark that this card was mailed from Mary’s holiday address.我从邮戳上看出,这张明信片是从玛丽度假所住的地方邮来的。He took a used envelope bearing an Irish postmark.他拿了一个盖着爱...
德拉蒙德正与“黄道神游”（本名马克·曼宁）合作撰写一本书。Drummond was working on a book in collaboration with Zodiac Mindwarp.他本名为约翰·伯克斯·吉莱斯皮，但人人都叫他“小迷糊”。He was born as John Birks Gillespie, but everyone knew him as Dizzy.亚里士多德写了一本名为《诗学》的文学作品.Arist...
饱受台风浸润的山区道路常因震动而崩塌.Highland roads often collapse when typhoon - sodden land is shaken.肌性动脉有慢性炎性细胞浸润的血管炎存在.This muscular artery demonstrates vasculitis with chronic inflammatory cell infiltrates.肾脏切片确定小细胞癌广泛性肾脏实质浸润的诊断.A k...