The author deals mainly with the ferrocyanide toning process, e . g . iron blue toning, copper red toning. 本文介绍几种最常用的调色方法,着重阐述亚铁氰化物调色法, 如: 铁调蓝色法 、 铜调红色法.
研究了用紫外分光光度法测定焦性没食子酸含量的一种新方法.An UV - spectrophotometry determination method for pyrogallic acid content was studied.生产焦性没食子酸和没食子衍生物系列产品.R & D , production and marketing of gallic acid, gall derivatives, etc....
They condemned the white paper as a charter for centralisation and selective education.他们谴责白皮书是在怂恿中央集权和精英教育。Diethyldithiocarbamate was more better selective collector than Xanthate on galena.与黄药相比,乙硫氮是方铅矿更好的选择性捕收剂.Water ...
主场球队依靠默里·斯特朗的罚球而旗开得胜。The home side drew first blood with a penalty from Murray Strang.聆听着唱片里鲁比·默里演唱《丹尼男孩》的时候，他们泪眼模糊。They got misty-eyed listening to records of Ruby Murray singing "Danny Boy".阿瑟·默里教狐步舞、探戈和华尔兹。Arthur Murr...