n. prerun
misc. preliminary examination ; preexamine
方法采用植物化学成分系统预试法和专项预试法。
Methods The methods of systematic pretest and individual pretest were adopted.
饲养试验共进行两期，每期正式期为15天，预试期为7天。
Feeding experiment has been run two times, every formal experiment period has 15 days, advanced experiment period has 7 days.
预试，依据测验的项目区分度、信度和效度评价结果修改测验；
Sixth, pre-test, analysis item differential validity, test reliability and validity, then amend the test.
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