1.The reason for the fail of carbon nitride synthesis was analysed and relevant graphitoid carbon nitride and unformed carbon nitrides were introduced in the article.
1.分析物合成成功的
因,对相关的类石墨的
合物和无定型的
合物作
介绍。
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17.The cities of that period, with their unsewered and unpaved streets, their dingy, flickering gaslights, their ambling horse-cars, and their hideous slums, seemed appropriate settings for the unformed social life and the rough-and-ready political methods of American democracy.
那个时期的城市,有没有下水道和没有铺砌的街道,有昏暗闪烁的煤气灯,有缓缓行驶的马车,还有丑陋的贫民窟,这些城市似乎适合美国民主制度成形的社会生活和粗野的政治方法.机翻