This technical process is simple, carburization is stable, application is widely.利用石墨煤增碳的炼钢技术,工艺简单可行, 增碳稳定, 应用广泛.Carburization of molten iron in the dropping zone of BF has been studied.高炉铁水渗碳的主要阶段在滴落带,炉缸内的渗碳过程不会掩盖滴落带的渗碳...
This paper advances the preparation method of erucamide by direct ammonolysis of rape oil. sol - vent crystallization.本研究提出菜籽油直接氨解、溶剂脱脂、蒸馏预分离、溶剂结晶提纯制取芥酸酰胺的方法....
Ronald Barnett , The Idea of Higher Education , Open University Press, 1990, p .165.转引自汉伯里·布朗:《科学的智慧》, 李醒民译, 辽宁教育出版社1998年版,第136页.Steven Barnett's late surge helped him to win a bronze for Australia.史·巴尼特迟来的发挥,使他最终为澳...