1·A process of Cr electroplating at room temperature with low chromic anhydride content was proposed.
提出了一种常温低浓度镀铬工艺。
2·Chromium plating in low chromic anhydride-containing bath at low temperature has been widely used for years for its peculiar advantages.
低温、低浓度镀铬具有其独特的优点，已推广使用多年。
3·In the presence of acetic acid and polyethylene glycol, chromic anhydride and acenaphthene react under mild condition and acenaphthene can completely convert into acenaphthenone.
在醋酸、聚乙二醇存在下，铬酸酐和苊在温和的条件下反应，苊可以完全转化为苊酮。
4·Zinc basic coating, prepared with flake zinc powder, aluminum powder, chromic anhydride and some other organic compounds, possessed good combination force and corrosion resistance.
利用片状锌粉、铝粉、铬酐及其它有机物配制的锌基涂料具有良好的结合力和耐蚀性。
5·By the reduction on industrial Chromic anhydride-methanol, the trivalent chromium main salt was made. The technological formula and standard of Chromium-Nickel alloy electroplating were given.
采用工业铬酐-甲醇还原法制备三价铬主盐，给出了电镀铬-镍合金工艺配方与工艺规范并对镀层性能进行了测试。
6·The paper introduces the application of chromic flotsam natrium bisulfate in the course of neutralization and pre acidification in industry of chromic acid anhydride.
介绍铬酸酐生产中，含铬硫酸氢钠废料用于前工段中和、预酸化。