Principle and operation technology of removing silicon,phosphorous and arsenic from sodium wolframate is presented.
阐述
钨酸钠溶液中除硅、磷、砷的原理,并提出

的操作工艺。
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As or more important, Hemingway's style, with its consistent use of short, concrete, direct prose and of scenes consisting exclusively of dialogue, gives his novels and short stories a distinctive accessibility that is immediately identifiable with the author.
与此同样重要,甚至比这更重要的是,这种以坚持使用简短、具体而直接的平铺直叙的文体和完全由对话构成的场景为主要特点的写作风格,使海明威的小说和短篇故事具有一种独特的、能够立即被确认是作者本人所写。
国青少年演讲 