抽样

To find out the present conditions and the problems of community health service carried out by enterprises hospitals,27 enterprises hospitals were investigated through simple random sampling.

为了解目前企业医院开展社区卫生服务的状况，发现存在的问题，采用单纯随机抽样方法调查了四川省27家企业医院。

Simple random sampling is the case where n objects are selected at random from a population, and each member of the population is equally likely to be included in the sample.

简单随机抽样是指从总体中随机取样n次，使得总体中的每个元素在样本中的出现的可能性相同。

In chapter one,the writing research the questions in sample rotation when sample with simple random sampling according the process of the sample rotation.

第一章 这章内容属于文献综述性质的，主要是按样本轮换的实施过程，讲述前人对简单随机抽样下的样本轮换理论的有关问题。

METHODS:Totally 164 young managers who had no basic disease and were less than 40 years in a Shandong company were selected with simple random sampling methods.

采用单纯随机抽样方法选取山东某大型国企中40岁以下无任何基础疾病的青年管理人员164人。

Objective: The paper discussed the pollution degree of Cd in different kinds of foods in markets and large super-markets in the L city by simple random sampling.

目的：通过简单随机抽样，探讨了L市区各菜市场和大型超市不同种类食品中Cd的污染程度。

Methods Questionnaire survey township leading cadres, township hospital employees and patients with simple random sampling.

采取单纯随机抽样方法对杭州某县乡镇干部、卫生院职工及患者进行问卷调查。

Two indexes named Detecting Intensity and Detecting Rate were designed to analyze the change of DC under 10 samples with different sample sizes by simple random sampling and regression.

以覆盖强度和覆盖率为指标，采用简单随机抽样方法，研究了在10种样本条件下浮动车数据路网覆盖能力的变化情况，并进行回归分析。

Methods: Simple random sampling was used to research into children aged 3 to 6 in the 6 counties in the Taian City, through questionnaires filled by parents on the amount and years of passive smoking of their children at different ages, the children's height and weight, and their respiratory health in the past year.

对泰安市6个县市区采用简单随机抽样的方式对3～6岁儿童进行调查，通过家长填写问卷的方式，调查内容包括不同年龄儿童的被动吸烟量及吸烟年限；测量儿童的身高体重；近一年呼吸道健康状况。

In this article,students actually present at exams are regarded as simple random sampling of all the students,and the sampling and assessing ways are applied.

将实考考生看作为考生总体的一个简单随机样本，应用抽样估值的方法，在若干合适的概率分布模型下，收集和推演了考生总体合格率的一些估计公式，以估计有考生缺考时，考生总体的合格率。

Adopt simple random sampling method, divided 100 cases of pulmonary tuberculosis patient into the experiment group and control group, offer different healing solutions separately, observe the result of treatment of different healing effects.

采用单纯随机抽样的方法，把100例复治肺结核患者分为试验组和对照组，分别给予不同的治疗方案，观察不同治疗方案的治疗效果；结果石吊兰片治疗组的痰抗酸菌涂片转阴率、病灶吸收率与对照组比较，差异有显著性。

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。