介绍了一种在凝胶体系中用扩散法制备草酸亚铁的结晶方法.A diffusion method for the preparation of ferrous oxalate in a gel system was presented.实验结果表明:添加有氯化亚铁的细水雾,其灭火性能发生了显著变化.This paper presents an experimental study of fire suppression effectivene...
比赛形势决定了他们要打防守战而不是进攻战。Circumstances dictated that they played a defensive rather than attacking game.我们坐在莉莉的日光浴室里，我把目前形势的细节情况又补充说明了一下。We sat in Lily's sunroom while I sketched in the situation.比赛开始的时候形势大好，斯皮德以一记精彩的进球...
He speaks in a melodious baritone.他的声音浑厚而有磁性。Every morning I can hear a rich voice of the baritone.每天早晨,我都能听到男中音浑厚的声音.He sang in his rich baritone.他以浑厚的男中音演唱....