sample

血样

a small amount of blood taken for medical testing

为医疗检测而采集的少量血液

免费样品

a small amount of a product given to customers to try at no cost

免费提供给顾客试用的小量产品

随机样本

a sample in which every member of the population has an equal chance of being selected

指总体中每个成员都有同等机会被选中的样本

组织样本

a small piece of body tissue taken for examination, often for a biopsy

为检查而取下的一小块身体组织，常用于活检

大样本

referring to a sample with a great number of subjects, often used in research

指包含大量研究对象的样本，常用于研究

代表性样本

a sample that accurately reflects the characteristics of the larger population

能够准确反映更广泛人口特征的样本

小样本

referring to a sample with a limited number of subjects

指研究对象数量有限的样本

随机抽样

to select subjects for a study in a way that gives everyone an equal chance

以给予每个人平等机会的方式为研究选择受试者

取样

to obtain a small amount of something for testing or analysis

为测试或分析获取少量物质

采集样本

to gather a small amount of something for testing or analysis

为测试或分析收集少量物质

测试样本

to perform a procedure on a sample to check for the presence of something or measure a quality

对样本执行程序以检查某物的存在或测量质量

分析样本

to examine a sample in detail to discover more about it

详细检查样本以了解更多信息

选择样本

to choose a group of people or things for a study from a larger population

从更广泛的人群中为研究选择一组人或物

抽取样本

to choose a group of people or things for a study from a larger population

从更广泛的人群中为研究选择一组人或物

样本量

the number of subjects or observations included in a study

研究中包含的受试者或观察的数量

…的样本

used to indicate what the sample is taken from or represents

用于指明样本的来源或代表

样本由某物组成

indicates what the sample is made up of

表明样本由什么构成

样本包含某物

indicates what the sample consists of

表明样本由什么组成