Primary data can be collected in four ways; observation, focus groups, surveys and experiment.
收集初级资料的方法有四种：观察、专题讨论、问卷调查和实验。
Methods Forty rabbits were involved in this experiment. Animal model of right femur comminuted fracture was made and randomly divided into four groups.
方法制造兔右股骨粉碎性骨折的动物模型，a组用异体脱钙骨基质颗粒复合骨水泥并表面贴附自体骨渣进行修复；
Discuss in groups of four and finish the experiment report.
小组讨论并完成实验报告。
The experiment was divided into five groups, four experimental groups and a control group.
实验分五组，即四个实验组和一个对照组。
During the experiment period of about four months (17 weeks), the two groups are treated differently by the teacher.
在四个月(约十七周)的实验期间，老师对两个班级进行不同的教法。
This experiment was without design, and subjects were randomly divided into four groups, each group randomly assigned to receive an objective result.
实验为组间设计，被试随机分为四组，每组随机接受一种客观结果。
This experiment was without design, and subjects were randomly divided into four groups, each group randomly assigned to receive an objective result.
实验为组间设计，被试随机分为四组，每组随机接受一种客观结果。
应用推荐