氯苯 、 溴苯和苯硫酚化合物的谱带出现于低限附近.In compounds such as chorobenzene, bromobenzene and thiophenol it lies close to the lower limit.方法以3-甲氧基苯硫酚和对甲氧基 - 苯乙酮为原料经溴化、烃基化、环合重排排制得目标产物.Methods: The target compound was synthesized through b...
Olivine has been completely altered to serpentine, talc, and amphibole in the bore - hole examined in detail.钻芯详细检查的结果,橄榄石全部蚀变为蛇纹石 、 滑石及角闪石.Jadeite jade consists of minerals of pyroxene, amphibole and feldspar groups.翡翠由...
She designs for a firm of dressmakers.她为一家女服饰店设计图样.Eventually these dressmakers and tailors began to establish their own shops where custom - made clothing and sold.后来,服装生产者或裁缝们开始建立自己的店铺,专门帮人们定做衣服....