蒽酮染料

Many people remember the colors of the rainbow by the acronym ROY G. BIV. For red, orange, yellow, green, blue, indigo and violet. Well, the color indigo just made news. Indigo gets its name from the plant Indigofera tinctoria and its relatives, whic

发表于:2018-12-24 / 阅读(60) / 评论(0) 分类 2016年Scientific American(九)月

2When the time drew near for David to die, he gave a charge to Solomon his son. 2I am about to go the way of all the earth, he said. So be strong, show yourself a man, 3and observe what the Lord your God requires: Walk in his ways, and keep his decre

发表于:2018-12-31 / 阅读(140) / 评论(0) 分类 列王记

Australian scientists say an organic compound used by Indian women to paint dots or bindi on their foreheads could hold the key to a breakthrough in cancer treatment. Rose Bengal was first used in the early 1900s as a dye for food, textiles and cosm

发表于:2019-01-11 / 阅读(51) / 评论(0) 分类 VOA标准英语2008年(八月)

DEVELOPMENT REPORT - Bringing Color to Life With Natural Dyes By Jill Moss Broadcast: Monday, August 15, 2005 I'm Barbara Klein with the VOA Special English Development Report. Dye can bring a little

发表于:2019-01-30 / 阅读(73) / 评论(0) 分类 农业与发展

今天我们要学的词是 throne. Throne is spelled t-h-r-o-n-e, throne. Throne 是王位,统治的意思。This year marks the 60th anniversary of Queen Elizabeth II's ascension to the British throne.今年是英国女王伊丽莎白二世登基

发表于:2019-02-03 / 阅读(33) / 评论(0) 分类 英语单词荟萃

An investigation has revealed six garment manufacturers in Shanghai have made school uniforms using toxic dye. The city's quality watchdog says it found aromatic amine dye in uniforms sold to 21 primary and middle schools across the city. China's nat

发表于:2019-02-14 / 阅读(61) / 评论(0) 分类 英闻天下