Otherwise, the optimal theoretical sampling number of the larva and the sequential sampling model were obtained.
并确定了该天牛幼虫林间调查的最适理论抽样数和序贯抽样模型。
Under some level of error, the theoretical sampling number should decrease as the average density of the mite increases.
在相同误差水平，理论抽样数随平均虫口密度的增加而减少。
The model data conversion, the population sequential sampling and the theoretical sampling number model were also built up in the paper.
在分布型研究基础上，探讨了资料代换模型，最适抽样数和种群序贯抽样模型。
The orthogonal sampling demodulating technique for low frequency time-code signal is introduced. Based on the theoretical analysis about its principle and implement method, The simulation is tested.
作者提出低频时码信号的正交扫描解调技术，从理论上分析了正交扫描原理和实现方法，并进行了仿真测试；
Though examples of common signal and sine signal, by the frequency spectrum graph and theoretical analysis, the minimum sample rate of the sampling theorem is made clear.
以一般信号和正弦信号为例，通过理论分析和频谱图示意，对抽样定理中最低抽样率的取值进行了明确的说明。
The biconical sampler is an ultra-wideband sampling device. The present paper performs the theoretical analysis, presents the formulas of design and some test results.
双锥取样器是一种超宽频带的取样器件。本文进行了理论分析、给出了设计公式及其某些测试结果。
The papers explanation of the minimum sample rate in the sampling theorem provides a theoretical basis for teaching and research.
抽样定理中最低抽样率的明确说明为教学和理论研究提供了进一步的理论依据。
The findings supply a theoretical basis for selecting sampling mode and sample size for the study of the disease.
以上结果为在病害调查中确定取样方式与样本大小提供了理论基础。
The theoretical analysis and numerical experiments with commercial software about sampling process in electrophoresis chip were presented.
对毛细管电泳芯片的压力进样过程进行了理论分析，并用商用软件对这一过程进行数值实验。
Its main theoretical base is the law of large Numbers in the theory of probability, whose main means is the sampling of random variable.
它的主要理论基础是概率论中的大数定理，其主要手段是随机变量的抽样。
Theoretical analysis and the actual simulation all indicate that the sampling efficiency can be increased significantly by using these optimum parameters.
分析和实际模拟表明，在以正态分布进行抽样的前提下，应用优化的参数，可使抽样效率进一步提高。
Phase theory analysis of spatial integral sampling provide theoretical basis for under sampling aliasing reduction.
空间积分抽样相位理论分析为消减欠采样产生的折叠混淆效应提供了理论依据。
Through the pressure loss theoretical study of the sampling nozzle, the inner compensation structure of fly-ash sampling nozzle was determined.
通过对取样嘴内压力损失的理论研究，确定了飞灰取样嘴的内补偿结构。
The results showed that the higher the population density of the larvae, the less is the theoretical number of sampling clumps;
结果表明，幼虫的种群密度愈高，理论抽样数就愈少；
Geometry effect in X-ray sampling has been investigated theoretically for first time. A set of theoretical equations about geometry effect has been developed.
本文首次从理论上探讨了X取样方法中的几何效应影响(实质是源样距变化影响)，导出了理论方程。
In theoretical, their advantage and weakness are analyzed. Experiment result shows that analysis above is correct and realistic for the digital synchronized sampling.
对数字同步采样法的试验研究证实了理论分析的正确性及其可实施性。
The sampling theorem is an important theorem in the stationary process, and discretization of the stationary process has theoretical and practical significance.
平稳过程采样定理是随机过程中的一个重要定理。
Additionally, the method has a great theoretical meaning for the standardization of the sampling interval and sample number in water qualities experiments.
此外，分段映射反演模型对野外水质样本采集实验的规范化具有较大理论指导意义。
Objective: Using the method of cluster sampling to find out syudents ' knowledge attitude and behavior towards aids, to provide theoretical basis for AIDS education.
态度、行为对艾滋病的预防和控制具有重要的意义。
Objective: Using the method of cluster sampling to find out syudents ' knowledge attitude and behavior towards aids, to provide theoretical basis for AIDS education.
态度、行为对艾滋病的预防和控制具有重要的意义。
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