1.
the population is divided into subpopulations (strata) and random samples are taken of each stratum.
全体被分成几类然后对每一分层进行随机取样。
2.
A cohort study is a longitudinal study in which a specific population is studied over time.
群体研究是在一段时间内对特定群体进行的纵向研究（随机取样）。
3.
random sampling
随机抽样,随机采样
4.
taken or to be taken at random.
随机的抽取或被随机抽
5.
random access
随机存取,随机访问
6.
We did the random sampling of five pieces per batch of 100.
我们在每批一百件的货品中取五件随机抽样。
7.
single random sampling
单次随机抽样 单次随机抽样
8.
simple random sampling
简单随机抽样 简单随机抽样
9.
random access memory computer
随机存取存储计算机
10.
random access computer equipment
随机存取计算机设备
11.
The Random Access Memory (RAM) holds the input sample data as they are brought in and processed.
随机存取存储器（ram）存放着送入进行处理的输入采样数据。
12.
Romeijn, H. Edwin. "Global Optimization by Random Walk Sampling Methods." Amsterdam: Thesis Publishers, 1992.
《随机漫步取样方法的整体性最佳化》，阿姆斯特丹：论文出版社，1992。
13.
RAM (random access memory)
随机存储器,[港]随机存取存储器,随机接达内存
14.
random access I/O routine
随机存取输入输出程序
15.
random access file
随机存取文件存储器
16.
static random access memory
静态随机存取存储器
17.
high speed semirandom access memory
高速半随机存取存储器
18.
movable random access memory
可换式随机存取存储器