random fee乱收费randomadj.任意的；随机的；随意的n.随意；任意adv.随机地random access input/output输入输出random bit-stream signaling随机比特流信令random illumination searching随机启发式搜索randomized controlloed trials随机对照试验random access message storage随机存取消息存储器random web-laying equipment无定向成网机,气流成网机random time-varying channel随机时变信道random amplitude distribution随机振幅分布random comparison coefficient随机比较系数randomized invariant strategy随机不变性策略