忠诚度,Walker认为是通过最近消费,消费频率,和产生价值3方面来衡量。
Loyalty, Walker says, is measured in recency, frequency, and value.
而另一方面,低频率则会导致错过更新的数据。
Low pulling frequency, on the other hand, may lead to missed updates.
同样,2010年,拉美和加勒比地区社会经济数据库将重点扩大覆盖面,提供劳动力市场调查数据。 劳动力市场调查的频率往往高于入户调查。
Similarly, in 2010, SEDLAC will focus on expanding coverage to provide harmonized data from labor market surveys, which tend to be carried out more frequently than household surveys.
造成这样现象的原因一方面是在夏季人们逐渐增多了外出活动的频率,另一方面还因这段时期是雷电暴雨频繁出现时间。
This is thought to be due to an increase in outdoor summertime activities coupled with storms peaking during this period.
ATC发来的回复听上去十分专业:“白杨20,你的地 面速度是1982节”在接下来的航程中,没人敢在这个频率上发出任何地面速度查询请求。
In a cool, professional voice, the controller replied, ' Aspen 20, I show you at 1, 982 knots on the ground.' We did not hear another transmis sion on that frequency all the way to the coast.
中成药的动态范围,但另一方面,也是一样,在所有频率。
PCM's dynamic range, on the other hand, is the same at all frequencies.
如用户在实际运行过程中两者结合使用,可减少机械振打的频率,减轻对机械振打部位的受热面焊口的冲击。
If user combines the two in actual operating process, frequency of mechanical rapping can be reduced and the impact on heating surface welded junction of mechanical rapping position can be relieved.
利用数值模拟的方法研究了电流调制下偏置电流和调制频率对垂直腔面发射半导体激光器(VCSEL)混沌动力学特性的影响。
The influence of bias current and modulation frequency on chaos dynamics of vertical-cavity surface-emitting laser (VCSEL) subject to direct current modulation is investigated by numerical simulation.
本文利用了解析法对电机定子面内弯曲模态的特征进行了分析,得到了圆环形薄板固有频率的理论表达式。
This thesis utilize the analytic method to stator of ultrasonic motor the curving vibration, receive the theory expression formula of the natural frequency of the round annular sheet metal.
裂面形貌扰动频率越小,振幅对裂腔分节临界形态比的影响越显著。
When the frequency is small, the amplitude has an obvious effect on the critical aspect ratio.
在网络环境下,多样化的传播途径和复杂的应用环境使网络蠕虫发生频率增高、潜伏性变强、覆盖面更广,给网络造成了极大的危害。
The diverse propagation way and complex application conditions bring worm eruption in frequency, latency and overcast, therefore the worm does very serious crisis to the network.
从静面压力、激动力、频率、振幅和振动时间等振动压实参数以及含水量对黄土振动压实效果的影响因素进行了系统的分析。
The influence regularity of vibratory parameters such as amplitude, frequency, centrifugal force, intensity of pressure, time of vibratory and material factors such water content is studied.
本方法和结果将有助于分析小掠角海底(面)散射的角度、频率依赖关系。
The method and results would be useful for analysing angular and frequency dependence of the bottom (or surface) scattering at low grazing angles.
实验结果表明,等离子体激励作用主要集中在近壁面附近;激励电压与诱导速度近似为线性关系,激励频率对诱导速度的影响不大。
Experiment results showed that the relation between exciting voltage and induced velocity magnitude was linear, but the influence of supply frequency was not evident.
对一类轴对称圆环的面内弯曲振动进行了分析计算,给出了圆环面内弯曲振动固有频率表达式。
The flexural vibration of a circular ring that is of axis symmetry is analyzed and calculated, the solid frequency expression of the flexural vibration is obtained.
当周边面力使夹层圆板的最低固有频率为零时,就可获得临界载荷的值。
When circumjacent load makes the lowest natural frequency zero, critical load is obtained.
研究了在交变磁场作用下磁场频率变化对7050铝合金小型方坯静态成型铸坯熔体的弯液面、显微组织以及元素分布的影响。
The effect of alternating magnetic field frequency on the meniscus, microstructure and element distribution of the static formed ingots of minitype square billet of 7050 aluminium alloy.
研究结果表明:自由液面和刚性壁面对结构的固有频率、振动响应及声辐射的影响是不容忽视的。
The results of this research show that the impact of the soft surface and the hard plane on the structural natural frequencies, vibration responses and the acoustic radiation cannot be ignored.
齿面误差对拍击门槛转速的影响不仅与自身的变化频率、幅值大小有关,更重要的是与时变频率及其组合频率有关。
Threshold rattling speed not only depends upon the frequency and amplitude of the errors of a gear pair, but also time-varying meshing stiffness and their combination frequency.
研究结果显示,在频率域内,面波衰减系数分布与群速度分布具有一定的相关性。
The correlation property between the distribution of attenuation factor and that of the group velocity is indicated, in this study.
本文用有限元法分析了柯氏力对桨叶旋转面固有振动频率的影响。
The influence of coriolis force on the natural frequencies of the rotor blades is analysed by the finite element method.
对圆弧拱面内自由振动的频率和非线性内共振现象进行了研究。
The in-plane free vibration frequencies and nonlinear internal resonance of circular arches were studied.
数值计算表明了,该参考面模式对干预测分层梁结构的振动频率和模态的正确性、实用性。
The numerical results obtained showed that the present reference surface element model has reliability and practicality to predict frequencies and mode shape of delaminated beam structures.
另一方面,也有证据显示,频率论者的问题解释可以改善统计推理表现,而且有时还会增加其反应的信心。
Some evidence emerged, on the other hand, that frequentist problem interpretation can improve statistical reasoning performance and increase confidence in responses at times.
利用线源长期平均浓度模式对面源的积分得到了一个用风向、风速和稳定度的联合频率计算大气面源长期平均浓度的新算法。
A new method of calculating long term mean concentration of air pollutant from area source is proposed by integrating the line source long term mean concentration model.
由于低频振荡频率较低、周期较长、波及面较广,给电力系统带来的危害也较大。
This paper describes the mechanism of power system low frequency oscillation production, and discusses the current common analysis methods. Through comparative ana…
本文中描述用振幅峰值的方法,测量面接触型晶体管OC70,OC71和点接触型晶体管2N32A内窄频带低频率噪声的振幅分布。
The amplitude distribution of narrow hand semiconductor noise in junction type OC70, OC71 and point contact type 2N32A transistors were measured experimentally by the "maximum amplitude" method.
和平坦、均一、开阔下垫面不同的是谱的峰值频率向高频移动,且没有发现近地层具有的谱峰随高度的明显变化关系。
The heavily dependence of spectra or cospectra on height, which exists in flat, uniform, and open underlying surface, disappears in the complex terrains.
本文从烟囱频率、风振频率和雷诺数三方面研究了该烟囱的振动问题。
In this paper, the vibration problem of a chimney is studied from the aspects of chimney frequencies, wind vibration frequencies and Reynolds number.
频谱分析表明测试信号中含有两个主频,分别对应发射探头的发射主频与测试面自振频率(采用ANSYS有限元程序作半空间体模态分析加以验证);
The signal's amplitude spectrum reveals that there are two main frequency, the higher is the probe signal's dominant frequency and the lower is the testing plane's free vibration frequency.
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