randomized
adjective science specialized (UK usually randomised) uk/ˈræn.də.maɪzd/ us/ˈræn.də.maɪzd/
随机化的
relating to experimental research where subjects are selected for particular treatments by chance
a randomized drug trial 随机药物试验
The randomized study will compare students' achievement in different types of school. 这项随机研究将对比不同学校学生取得的成绩。