random set随机集randomadj.任意的；随机的；随意的n.随意；任意adv.随机地random data processing随机数据处理random number sequence随机数列random-bias hologram随机偏置全息图random moving obstacle随机障碍物random crystallization无规结晶random-like property类随机性random early detection随机早期检测random coiling polymer无规卷曲聚合物random access scanning随机扫描random copolypropylene无规共聚聚丙烯