Through the separation, lignosulfonate with narrow molecular weight distribution was obtained and then chemically modified.木质素磺酸盐是一种常见的普通减水剂, 其分子量分布较宽,从而影响减水剂性能.The graft mechanism of lignosulfonate and acrylic acid was ...
The graft mechanism of lignosulfonate and acrylic acid was studied in this paper.本文研究了木素磺酸盐和丙烯酸单体的接枝共聚机理.Through the separation, lignosulfonate with narrow molecular weight distribution was obtained and then chemically m...
The skyline of domes and minarets was imprinted on my memory.天空中穹顶与尖塔的轮廓深深刻在了我的记忆中。The village church dominates the skyline.乡村教堂在天空映衬下的轮廓非常醒目。The Empire State Building is a familiar landmark on the New York skyline.帝国大厦是...
This illustration shows a vertical section through the locust.本图所示为蝗虫的纵剖面.The locust shrills his song of heat.蝉儿唱出炎热季节的欢歌.All thy trees and fruit of thy land shall the locust consume.42你所有的树木和你地里的出产必被蝗虫所吃....
Few Englishmen wear frock coats now. They went out years ago.现在,英国人很少穿大礼服了, 大礼服在多年以前就不时兴了.That frock shows your petticoat.那件上衣太短,让你的衬裙露出来了.The frock is now out of style.这种女上衣已不时新了....