1. 棱镜,棱柱(体);棱形;= Parallel Reduced Instruction Set Multiprocessor,并行精简指令系统多处理机; = Personnel Record Information SysteM, 人事档案信息系统; = Personnel Records Information System for Management, 管理用人事档案信息系统
语源
late 16th cent.: via late Latin from Greek prisma 'thing sawn', from prizein 'to saw'