实验研究中的对照设计黄振学张超英纪新强实验研究是使设计的实验因素在其它因素被严格控制的条件下，对实验效果进行观察的研究，这是医学科学研究的重要资料来源。实验研究必须有严密的实验设计，即对实验因素作合理的有效的安排，最大限度地减少实验误差，使实验达到高... Control Design in Experimental Research Huang Zhenxue Zhang Chaoying Ji Xinqiang Experimental research is to make the experimental factors of the design under the conditions of other factors being strictly controlled to observe the experimental results, which is an important source of information for medical science research. Experimental research must have a rigorous experimental design, that is, reasonable and effective arrangements for experimental factors, to minimize experimental error, the experiment reached high ...