“字频”的概念、定义、翻译、参考文献-科学参考

单词	字频
释义	字频 Encyclopedia 文学现代汉字释 character frequency字频个体文字在语料文本中使用（出现）的次数与该语料文本总字次之比。用公式表示为：。其中表示字频，表示出现次数，表示语料文本总字次。
随便看	nitrogen cycling nitrogen deposition nitrogen deposition experiment nitrogen dioxide nitrogen dioxide photolysis nitrogen dioxide pollution nitrogen fertilizer nitrogen fixation nitrogen fixation by free-living bacteria nitrogen fixation; fixation of nitrogen nitrogen-fixing bacteria nitrogen-fixing microorganisms nitrogen flooding nitrogen-free extracts nitrogen in coal nitrogen inversion Nitrogen isotope Geochemistry Nitrogen loss from body surface nitrogen metabolism nitrogen mineralization nitrogen monoxide nitrogen monoxide synthase nitrogen monoxide synthase (NOS) nitrogen narcosis nitrogen nutrition in plant

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。