介绍了吩噻嗪的制备方法, 主要是二苯胺与硫在催化剂存在下反应的方法.Its preparation method, which mainly reacted by diphenyl amine and sulfur with catalyst, is introduced.本文报道了两种新的吩噻嗪衍生物的合成, 光学及其电化学性质.The synthesis, luminescence and electrochemical prope...
Serpentine often contains some asbestos , and should be used with caution .因为蛇纹石往往包含了一些石棉，收集时应谨慎。They claim the council has prejudiced their health by failing to deal with asbestos.他们声称，理事会没有处理好石棉的问题，从而损害了他们的健康。The prosp...
In 1952 she wed film director Roger Vadim.1952年她嫁给了电影导演罗杰·瓦丹。Fonda was formerly married to director Roger Vadim and politician Tom Hayden.方达曾与导演罗杰·凡蒂和政界要人汤姆·海登有过两段婚姻....
玩具店是孩子们的仙境。The toyshop is a fairyland for young children.那座花园是个繁花似锦、香气袭人的仙境.The garden was a fairyland of beautiful flowers and sweet odors.它会像磷火那样发出捉摸不定的光芒, 跳跃着飞向欢乐的仙境.It burns as a will - o'- the - wisp , dancing ...