A new type gemini surfactant was synthesized from 1,4 - butanediol , maleic anhydride and 1 - octadecanol.采用1,4- 丁二醇 、 马来酸酐及十八醇为主要原料,合成出一种双子表面活性剂1, 4- 丁二醇双琥珀酸十八醇双酯磺酸钠.The catalysis of big pore strong acid resin for 1, 4 ...
机车建筑有限公司是该托拉斯的全资子公司。The Locomotive Construction Company Ltd is a wholly-owned subsidiary of the Trust.这是一家大型跨国企业的全资子公司。The company is a wholly-owned subsidiary of a large multinational.那家公司投下巨额资金于国外的子公司.The company place...
土地投机的浪潮到1981年结束.The boom in land speculation came to an end in 1981.所有生产和投机的复杂情况都不考虑.All the complications of production and speculation are eliminated.大胆的冒险者,有时也许由于两三次投机的成功而获得很大一笔财产.A bold adventurer may sometimes acqui...
Conifer tree style such as pine, fir, spruce, redwood, juniper, etc.针叶类树包括松树 、 杉树 、 云杉 、 红木 、 刺柏, 等等.A jay emerged from the juniper bush in a flash of blue feathers.只见亮闪闪的蓝色羽毛一闪，一只松鸦从刺柏丛中钻了出来。Observation on Roots and Exp...