抽样

Selection and preparation of samples for spectrographic analysis.

锌合金锭。发射光谱分析用样品的制备和抽样

However, the sampling distributions are usually so complicated, this makes establishing the exact confidence interval very difficult. Cheng and Spiring (1989) proposed a Bayesian procedure for assessing process capability index Cp. Chan et al.

然而，大部分制程能力分析的文献都是基於传统频率学派方法所作的推论，但由於估计式之抽样分配往往太过复杂而使得准确的信赖区间并不易求得。

objective to investigate the weight control behav iors and the related factors to middle school students, and to provide bases forpreventing health-risk behaviors.methodsquestionnaire surv ey was conducted among a cluster strati fied sample of 4 542 middle school students of grade one in junior middle schooland grade two in senior middle school.

目的 了解广州市中学生减肥行为现状及其影响因素，为预防中学生健康危险行为的发生提供依据。方法按随机分层整群抽样方法，抽取广州市4所中学初一到高二5个年级共4 542名中学生进行问卷调查；通过家长问卷收集学生的家庭背景资料，分析减肥行为与家庭因素的关系。

China and the United States have agreed to initiate immediately a joint project to reach a bilateral agreement on tolerance level of TCK in wheat exports to China, and to study sampling and testing procedures proposed by United States in Addendum C.

同意立即开始合作项目，以便就输华小麦TCK允许量问题达成协议，并研究美国提出的抽样和检验程序。

The method of solid phase membrane extraction-gas chromatographic analysis for the determination of tetramine in urine and blood is briefly described.

这是有关截距抽样估测面积的讨论。我希望我的决心能长久保持下去，直到铁面无私的命运女神哪天心血来潮掐断我的寿数为止。

Factor analysis methodology was applied to the data matrix gathered from users' opinions on a restricted sample of social science DB thesauri.

我们应用因素分析法来分析社会科学数据库中严格抽样出来的用户观点数据矩阵。

The literature review is used to build research framework. Afterward, there are 213 valid subjects, selected by convenient sampling from the full-time workers in the north, the midland , and the southern part of Taiwan, including Taipei City, Taoyuan County, Hsinchu County, Changhua County, Tainan City and County, Kaohsiung City and County, and Pingtung City and County. Individual Traditionality Scale, Individual Modernity Scale, Organizational Relationship Scale and Chinese Happiness Inventory were used in this study.

本研究经由相关文献建立研究架构，以便利抽样台湾北部、中部、南部三区之11个县市（台北市、桃园县、新竹县、云林县、彰化县、台南县市、高雄县市、屏东县市）全职工作者进行问卷调查研究，共计施测回收213位有效样本，使用「多元心理传统性量表」、「多元心理现代性表」、「关系品质表」及「中国人幸福感表」为研究工具，进统计分析。

The traditional methods of testing the degree of compaction only test several points,and these points can hardly represent all the area which had been compacted. So it is essential to develop a speediness,undestructive,quantificational instrument for the measurement of the degree of compaction.

传统的压实质量检测方法是用人工抽样检测来推测所有的压实区域，其结果误差较大，易造成漏检，因此研制开发一种快速、无损、定量的压实度检测仪器迫在眉睫。

On the basis of the statistical characterestics of satellite meteorological infrared cloud charts this paper presents a coding algorithm of "Sub sampling+Modified JPEG+Image enlarging",realizing a compression ratio of 50∶1～100∶1, with the PSNR of 35～40dB and visually unperceptible distortion.

依据GMS卫星红外气象云图的统计特性，提出了一种&亚抽样＋修改的JPEG＋图象放大&的静止图象编码方法，使有失真压缩比在50∶1至100∶1时，恢复图象峰值信噪比在35dB～40dB之间，主观质量无视觉可觉察到的失真。

When one item is unqualified, the sample is not qualified. If type inspection is not qualified, additional sampling can be done in the same batch, if unqualification still exists, this batch samples are not qualified.

6.8 检验项目一项不合格，判定样品不合格，若型式检验不合格，允许在同一批次中加倍抽样，仍不合格，判定该批次控制器为不合格。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。