查询词典 sampling error

The sampling of complicated materials were investigated. The relationship between the composite sampling variance and the number of increments was studied. The quantitative equation for estimating the composite sampling errors directly from the physical and chemical parameters of the population with multinomial distribution theory was presented. Monte Carlo simulation technique was employed to verify the above theories.

对于复杂物质的取样，研究了分层性物质的组合取样误差与份样数目之间的关系；采用多项分布理论，提出了组合取样误差公式，建立了组合取样误差与被研究总体的理化参数(如组分含量、质量分数等)之间的定量关系，通过Monte Carlo模拟技术对此进行了验证。

This paper analysized the relationship between sampling frequency fs and the taps N of low pass filter in A/D transform and got a formula expression, which can give reference to the parameter design of quadrature sampling.; aiming at the wave distortion in traditional arithmetic of quadrature sampling with pulse compression, an improved algorithm has been studied and validated in Matlab and get perfecter result. In order to enlarge the detect distance of Radar, a method of part pulse compression is put forward, the realistic sense and the implement scheme is analysized.

本文分析了在正交插值前端A/D变换中采样率的选择与正交插值低通滤波器的阶数的关系，得到公式化的表达式，可为正交采样参数设计提供参考；针对传统的正交插值及脉冲压缩算法中的波形畸变提出了改进方案，并通过仿真实验得到较好的效果；为扩大雷达的探测距离，提出部分脉压的方案，详细分析了其理论意义及实现方法。

Unequal probability sampling is a very effective method for sampling applications,which is a sampling scheme with unequal probability .

不等概率抽样是赋予总体每个单元不完全相等入样概率的抽样，是实际中十分有效的抽样方法之一。

That is sampling 15 percent of total amount, grouping according the code, simple proportional sampling and clustering sampling with group. A core collection bank of ...

按照最佳建库方案构建起了一个以资源总数3170份的15%，即477份核心样品资源可代表总体资源98%以上的遗传多样性的核心种质库。

The survey conducted in Taiwan was designed using a multiple-stage sampling method that utilized the principles of probabilities proportional to size, stratified sampling, and systematic sampling to strengthen the sample's effective representation.

为符合研究的需要，本次研究的抽样方法采取较复杂的多阶段抽样法，主要应用「抽取率与单位大小成比例」原则，结合分层抽样、等距抽样等抽样方法的优点，以求提高样本代表性。

As the results of this sampiing area were far below those derived from calculation of the critical sampling area, the paper concluded that the setting size and direction of a basic sampling quadrat could have a great influence on the efficiency of each sampling.

研究发现沿垂直于沙丘走向的方向布样，以4m 4m为基本样方，抽样272m^2即达到60％群落物种，远低于临界抽样面积的求解结果，表明基本样方大小和设置方向对抽样效率产生重要影响。

A fire\|new theory for periodic or quasi\|periodic signal sampling is proposed,w hich is especially for sampling high\|frequency wideband periodic or quasi\|peri odic signal by low sampling rate system.

涉及一种周期或准周期信号的采样技术，特别适用于低频采样系统采集高频宽带周期或准周期信号。

The experiment show that the sampling strategy using Halton points is better than the random sampling strategy at sampling points distribution.

实验结果表明，Halton点采样策略比一般的随机采样策略具有更好的采样点分布。

Bull; Add sampling cup at any time during sampling as per various liquor ratio and cloth, whitch does not affect sampling speed .

在打样时可不同浴比、不同布种随时加样杯，不影响打样速度，升温途中可加样杯。

Our company has designed and produced successfully series of Fast Response Sampler which are the newest units for sampling by absorbing the advanced technology from abroad They boast a series of strong points,such as fast response to the sampling,simple operation,high accuracy and so on,It is an ideal unit for sampling.

科学技术的进步，推动着检测技术的发展，我公司在学习国外先进技术的基础上研制成功，并已投入生产快速取样器系列产品，是最新颖的取样装置，它具有取样快速、制样简单、质量优良等一系列优点，是一种理想的取样工具。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。