查询词典 sampling methods

The two kinds of mistakes existing in sampling inspection are analyzed and the characteristics of two kinds of sampling inspection are discussed in the dissertation.

本文以概率论、数理统计为基础，分析了抽样检验两种错误的产生原因，论述了监督型抽检与验收型抽检的特点。

This contributes to the scientific establishment of sampling method.The sampling procedure for inspection by attributes is putted forward in this paper.

在对计量抽样检验方案进行研究的基础上，论文提出采用计量标准型抽样检验方案进行混凝土强度的检验。

The influences of sampling method and sampling depth on stability and the selection of analysis conditions have been discussed.

对取样、制样深度对稳定性的影响、对分析条件的选择进行了探讨。

Another method of sampling is called line sampling.

取样的另一种方法称为在线取样。

Then, researcher selected adequate number of classes from every region in Taipei through convenience sampling in order to maintained apposite sampling ratio of population.

研究者参酌区域的代表性，先以「分层取样」为原则，再以「立意取样」方式於各区抽取适当的班级数，并维持适当的母群抽样比率。

Then according to the good decreasing property of Chebyshev expantion, we prove the better characteristics of nonuniform sampling DCT in compression ratio and compression quality comparing with uniform sampling DCT.

然后根据Chebyshev展开式良好的下降特性，证明了文章提出的非均匀取样的DCT变换与传统的均匀取样DCT变换相比在信号的压缩倍数和压缩质量方面所具有的良好特性。

Simple random sampling; stratification ; ratio and regression estimates; systematic sampling, subsampling; cost functions and choice of optimal design; estimation procedures.

简单随机抽样，分层抽样、比率和回归估计，系统抽样、次级抽样，成本函数与最优设计选择；估计过程。

ABSTRACT:The half-power bandwidth method is the commonly used method at home and abroad, the authors discover that factors, such as the sampling frequency, the frequency resolution, the ratio of the sampling frequency to the signal frequency, the analyzed width and the damping ratio, make the estimated damping ratio fluctuate vastly. Mostly the result is incredible except for some conditions, the error is sometime amazing, which is not acceptable.

半功率带宽法是国内外常用的测试阻尼的方法，笔者发现半功率带宽法由于受到信号处理中的①采样频率SF②频率分辨率△f③采样频率与信号频率之比K ④采样分析的长度T和⑤阻尼比D的大小等因素的影响使得测得的阻尼比值波动很大，除少数状态是可信的外，多数状态是不稳定的，有时误差惊人，得到的测试数据不能使用，易导致错误的结论。

Self-inspecting refers to the production of the finished product on their own or in the production of semi-finished goods;互检 refers to the yearly-in-command, team leader between mutual inspection, monitoring each other; strict is under operation to operation; measuping is a quantitative analysis of quality inspector, timing, or randomly on the production of semi-finished or finished product quality inspector, sampling inspection, which is based on the bookbiding workshop in sampling ratio, the ratio of non-conforming and company's check basis and expected to be a standard, to be fair, just and open to the law.

自检是指在生产过程中对自己生产的成品或半成品的检查；互检是指每道工序的机长、组长间进行互相检查、互相监督；层层把关检是指下道工序对上道工序的检查；抽检是指由专业的质检员定时、定量或随机地对所生产出来的半成品或成品进行抽样检验，其中质检员是根据装订车间的抽样比例、不合格比例及公司的各项检查依据和要求为标准，公平、公正、公开地办事。

By the research of sampling survey and radio propagation, a novel method on sampling and analysis of field test data is introduced.

通过对抽样调查理论和无线传播特点的研究，提出了一种移动通信网络路测数据的抽样与分析方法。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。