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.
分析了妨碍碳氮成成功
因,对相关
墨
碳氮
和无定型
碳氮
作了介绍。
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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.
那个时期城市,有没有下水道和没有铺砌
街道,有昏暗闪烁
煤气灯,有缓缓行驶
马车,还有丑陋
贫民窟,这些城市似乎适合美国民主制度
成形
社会生活和粗野
政治方法.