relative frequency

1. Besides this, it is interesting to know the relative frequency of each use case.
   除此之外，要注意了解每个用例的相关执行次数。
2. Frequency-dependent selection-A form of natural selection in which the fitness of an individual's genes is dependent upon the relative frequency of that gene in the population.
   频率依赖性的选择-一种形式的自然选择中，健身个人的基因取决于相对频率的基因中的人口。
3. The high-frequency codons were selected by high-frequency codon analysis according to relative frequency of synonymous codon ( RFSC) which is calculated by RFCS program written by ourselves.
   利用自编的RFCS程序计算同义密码子相对使用频率（RFSC），并根据RFSC值筛选出高频密码子。
4. The relative frequency polygon has the same shape as the frequency polygon made from the same data set but a different scale of values on the vertical axis.
   根据同一资料绘制的相对频率多边形与频率多边形的形状是相同的，只是纵轴上的标尺不同。
5. A weighted algorithm of Triangular window and wavelet transform are using to measure active power and power factor of three-phase asynchronous motor in the non-sinusoidal waveform. The error of active power and power factor is proportional to square of relative frequency deviation.
   采用三角窗加权算法并结合小波变换计算非正弦状态下三相异步电机有功功率、功率因数，其测量误差与相对频偏的平方成正比。
6. The wave relative frequency in the coordinate system moving with current and the angle between the direction of wave propagation and that of current are computed based on the wave dispersion relation.
   利用波浪弥散关系的迭代计算求得波向与流向的夹角以及波浪的相对频率。
7. Monitoring of microbial inhibition process by bulk acoustic wave impedance technique and the relative frequency shift response model
   用声波阻抗传感技术监测细菌的生长抑制过程及其相应的频移响应模型
8. After the calculation of the relative density, relative frequency and relative dominance, the importance value of the species was calculated. The importance of the species in the niche was judged by the important value.
   据所调查的数据计算出不同生境各个树种的相对密度、相对频度、相对优势度及重要值，根据重要值的大小来判断该种群在该生境中的地位和作用。
9. The precision of measurement can be improved by optimizing the path of steam flowing through the cavity, selecting working pattern with high quality factor, advancing the measurement precision of the relative frequency deflection and adopting material with lower thermal expansion coefficient and special resonant cavity configuration.
   实际应用中，可以通过选择蒸汽在谐振器中的通流位置，选择高品质因数工作模式，提高系统对相对频偏的测量精度，以及采用低热胀材料和特殊谐振器端头结构的办法来提高测量精度。
10. Two classification systems of depositional sequence hierarchies are respectively presented, which are based on the relative frequency and relative magnitude of base level changes.
    沉积层序的级别有2种划分系统，分别以基准面变化的相对频率和相对振幅为基础。
11. In this paper, authors advised a new method calculating the cumulative relative frequency, to study frequent distribution of plant size in the population. To investigate the distribution and frequency of symptoms in manic-depressive disorder.
    提出了在解析植物群体的直径分布时不划分直经阶，直接求累计频度的方法；目的调查住院躁狂和抑郁症的症状分布和频度。
12. The text feature selection methods are introduced, analysed and researched, including information gain, mutual information, 2 statistics, document frequency, low loss dimensionality reduction, relative frequency difference.
    对文本分类的特征选择方法，包括信息增益、互信息、2统计量、文档频率、低损降维和频率差法等做了详细介绍、分析、比较研究。
13. An experimental system for determining local time differences and relative frequency difference for two separate hydrogen masers has been carried out.
    在此基础上，介绍了我们建立的一套地面激光时间传递系统，以及对两台氢原子钟进行钟差比对和相对频率差的测定。
14. Negative politeness strategy and bald on record politeness strategy are less frequently used ( with the relative frequency of 22 and 18.49 respectively).
    消极礼貌策略和公开实施面子威胁行为策略的使用率次之（其相对频率分别为22和18.49）；
15. A analytic formula about the measuring value of active power and power factor of periodic signal as a function of the relative frequency deviation and the sampling initial phase ( or time) is derived;
    推导出任意电压、电流信号的有功功率、功率因数随相对频偏及采样相位变化的一般公式；
16. Code-starting sequences and 1307 code-terminal sequences of E. coli were compiled and the RF ( relative frequency) values of 6 base elements, 4 base elements and 3 base elements in the two regions were counted.
    对大肠杆菌1231个编码开始区域和1307个编码终止区域内的6碱基片段、4碱基片段和3碱基片段进行了统计。
17. The relative frequency and Doppler frequency rate estimation accuracy is high, and the process of solving the ambiguity is simple. Lastly, this chapter presents three filter methods of rate of Doppler frequency.
    该算法具有相对频率估计精度高、解模糊过程简单、运算量小、多普勒频率变化率测量精度高等优点。
18. A virtual arbitrary waveform generator in DDS is introduced, in which FPGA is used for the digital circuits and memory carriers in Quartus, the constant high relative frequency precision can be realized in the low frequency area.
    Quartus环境以FPGA为数字电路和存储体载体，运用DDS技术虚拟实现任意信号产生，并在信号低频段仍能保持恒定很高的频率相对精度。
19. When Coping with simple problems, most of the teachers calculated probability by permutations and combinations or by analyzing the tree diagrams, rarely by designing simulations to estimate probability by relative frequency.
    对于比较简单的问题，教师主要采用排列组合方法或作树状图等计算概率，很少设计模拟试验用频率估计概率，高中教师理论分析的成功率高，但是没有一个人提到用频率估计概率。
20. Both theory and numerical computation show that the error of active power and power factor measurement is proportional to the relative frequency deviation when the conventional algorithm is used, while it is proportional to square of the relative frequency deviation when the proposed weighted algorithm is used.
    传统算法的有功功率、功率因数的测量误差与相对频偏成正比；而用该文所提出的三角窗加权算法，有功功率、功率因数的测量误差与相对频偏的平方成正比。
21. The electromechanical coupling coefficient is usually determined from the relative frequency spacing of the resonance and anti resonance.
    压电材料的机电耦合系数通常由谐振及反谐振频率之间的相对间隔确定。
22. Results Using relative frequency distribution curve constructed by measured data, we can judge whether it is a symmetric bell shaped curve or not.
    结果利用监控所得感度、对比度数据建立的相对频率分布图，笔者可以判断它是否是对称的钟型曲线。
23. Objective To evaluate the practical application of the WHO classification of lymphoid neoplasms, and to investigate the relative frequency and geographic distribution of the subtypes of lymphoma.
    目的研究世界卫生组织（WHO）淋巴组织肿瘤新分类法的适用性，观察淋巴瘤不同类型的发生率以及淋巴瘤类型分布的地域人群特点。
24. An assessment of resonance frequencies is made in reference to relative frequency characteristics of the layer obtained for longitudinal and transverse waves from 14 earthquakes recorded in three sites.
    参考从三个场地14次地震记录的纵、横波速求得的土层相对频率特征，进行了对其共振频率的评估。
25. Based on feature extraction in the prediction of protein classification problem, this paper propose two new protein vector. One is based on the pK value and the other is based on the relative frequency.
    本文围绕蛋白质分类预测中的特征提取问题，提出了两种新型的蛋白质向量表示法，一种是基于电离常量的向量表示，一种是基于相对频率的向量表示。
26. At the same time, a track control function and adaptive control algorithm to reduce the relative frequency of the rudder roll, the failure rate and maintenance costs are reduced, while also increasing the safety of the ship.
    同时由于具有航迹控制功能和自适应算法，使动舵次数相对减少，降低了舵机的故障率及维修费用，同时也增加了船舶航行的安全性。
27. According to the school level, we divided them into early, middle and senior three stages, respectively by applying the method of correctly using relative frequency statistics from each stage of the acquisition sequence.
    按照学时等级分为初、中、高级三个阶段，运用正确使用相对频率法分别统计出每个阶段的习得顺序。

noun

1. the ratio of the number of observations in a statistical category to the total number of observations

   Synonym:    frequency