酒精是树脂性物质的溶媒.Alcohol is a solvent of resinous substances.甘草浸膏的制备多采用水回流法,生产周期长,溶媒用量大,甘草酸收率低.The producing procession of extractum glycyrrhizae usually adopts water reflux method.以水为主要溶媒,提取脱脂大豆粉中的大豆异黄酮.Soybean isoflavones w...
The boat wallowed helplessly in the stormy sea.那艘船在波浪滔滔的大海中无力地颠簸行驶.She watched helplessly as her husband was dragged away.她眼睁睁地看着丈夫被拉走了。Cross-currents can sweep the strongest swimmer helplessly away.即使最强壮的游泳者也会无助地被交叉水流冲走...
The lorry driver escaped unhurt, but a pedestrian was injured.卡车司机安然脱险,但有一位行人受了伤。Unhurt, but a bit shaken, she was trying not to cry.虽安然无恙,但受了点惊吓,她强忍住不哭出来。The two girls suddenly emerged from among the trees. Both seemed ...
This article introduces and exports of leatheret industry and the situation of the related industries.阐述了我国人造革、合成革行业发展现状及发展特点,提出了中国人造革、合成革行业的工作重点及发展方向....