bases usage frequency 碱基使用频率
base usage frequency 碱基使用频率
codon usage frequency 密码子使用频率
per capita usage frequency 人均使用频率
frequency of usage 使用频次
frequency usage 使用频率
The two languages, however, differ in their conceptual instantiation and usage frequency.
但汉英在具体的时间概念例示和使用频率上却有差异。
参考来源 - 汉英空间Codon usage bias was studied by means of on-line analysis procedure: Codon W on Lycoris longituba, Arabidopsis thaliana,Zea mays and Solanum lycopersicum.12 condons have higher usage frequency and 11 have lower in all the 4 kinds of plants.
采用在线分析程序Codon W进行长筒石蒜、拟南芥、玉米和番茄的密码子使用偏性分析。 所研究的4种植物中12个密码子的使用频率普遍偏高。
参考来源 - 长筒石蒜叶片发育生物学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
There is same bases usage frequency in coding sequence between leading strand and lagging strand.
先导链与滞后链编码序列的碱基使用频率基本一致。
Moreover, species with near homology relationship on evolution share the near codon usage frequency and preference index or the similar index.
在同源性方面，在进化上比较接近的物种，基因的密码子使用频率和使用偏性指标比较接近或基本相同。
This paper holds that comparatively rational grade and sequence can be obtained by taking into consideration of difficulty levels and usage frequency count of grammar items.
从语言难易度、使用频率等角度进行分级、排序，能够达到相对合理的程度；
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