查询词典 sampling fraction

Random sampling is simply a method of selecting item s for inclusion in a sample; it can be used in conjunction with either stati stical or nonstatistical sampling.

随机采样仅仅是选取样本项目的一种方法，它既可以用于统计抽样，也可以用于非统计抽样。

Comparison of statistical and nonstatistical sampling A sample is said to be nonstatistical when the auditors es timate sampling risk by using professional judgment rather than by using sta tistical techniques.

统计抽样与非统计抽样的比较当审计师凭借职业判断而不是运用统计技术来估计抽样风险时，这种抽样就称为非统计抽样。

In July 2006, the diurnal activity rhythms of 13 heads of captive Qinling golden takin were observed in Shaanxi Provincial Centre for the Breeding and Conservation of Rare Wildlife at daylight (from 9:00 am to 4:00 pm in July). The behavioral ethnogram was identified through observation at the sampling site, with the behaviors of golden takin recorded at 5 min interval using instantaneous scannable sampling method.

2006年7月，在陕西省珍稀野生动物抢救饲养研究中心内采用瞬时扫描取样和全事件抽样法对13头圈养秦岭羚牛的昼间(自早09：00至下午04：00)活动规律进行了观察。

By sampling echo signal demodulated and A/D transform, sampling value is transmitted to SCM for compare, division, calculation, and exporting gain code to control signal range; furthermore controlling the AGC circuit, realizing amplification control to echo signal, consequently stabilitate the signal range in a window for the later circuit.

通过对检波后的回波信号进行采样，经过A/D变换，采样值送入单片机内部进行比较、判别、计算，然后输出可控制信号幅度的增益码去控制AGC电路的受控级，实现对回波信号的增益控制，从而使得输出信号幅值稳定在一个窗口内，供后续电路处理。

According to the characteristics of the wayside frequency-shift signal spectrum,and based on a great number of computer emulators and real-time experiments and on non-complete periods sampling,the feasibility of applying the under-sampling technology to the real-time FFT analytical method of tramroad FSK signal is validated.

针对轨道移频信号的频谱特点，采用欠采样技术对轨道移频信号进行非整周期的采样，经过计算机仿真实验，验证了基于非整周期采样方法对轨道移频信号进行实时傅里叶变换分析检测的可行性，证明采样方法满足检测指标的要求。

And, of course, all the alternatives of biareal plot sampling are possible for triareal plot sampling .

当然，两种面积样地抽样的所有可选方案对三种面积样地的抽样都适用。

The wavelet time-frequency properties of the uncracked rotor and the cracked rotor were discussed by the continuous wavelet time-frequency analysis algorithm. A new algorithm using the wavelet time-frequency analysis algorithm to detect the crack was proposed. The influence of the sampling frequency on the wavelet time-frequency analysis algorithm was analyzed through the numerical simulation research; the valid sampling frequency was presented.

利用连续小波时频分析方法，讨论了裂纹转子与无裂纹转子的小波时频特性，提出了利用小波时频分析方法识别裂纹的新方法；数值仿真研究了采样频率对小波时频分析方法的准确性和有效性的影响，并给出了建议性的采样频率。

Auto-sampler to promote traditionally experiential sampling approach to forecasted sampling approach. Therefore, we can accurately evaluate the change of dissolvable and undissolvable pollutants phenomena in the rainstorm events.

自动采样器结合，将传统经验采样方式提升为预测采样方式，并评估在单场雨中溶解性与非溶解性污染物所产生的污染与浓变化。

Ammunition sampling is a special conveyance problem with unfull loading, transportation with one vehicle, much more sampling point, constituted a special problem of TSP , called "mimetic traveling salesman problem".

弹药采样问题是一类特殊的非满载车辆运输问题，单车运输，采样点多，构成了一类特殊的TSP问题，称之为类TSP问题。

In chapter four"The application of generalized sampling theorem to data compression", the qaulity of approximation coefficients is proved and a methodology of discrete cosine transformation combined with ununiform sampling is put forward.

第四章&广义采样定理在数据压缩中的应用&，对广义采样定理一中的展开式系数性质进行了证明，在此基础上提出了一种结合非均匀采样的离散余弦变换方法。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。