virtual PAD虚分组装折设备virtualadj.实质的；【计】虚拟的virtual reference platform虚拟参考咨询平台virtual trajectory control虚拟轨迹控制virtual housing enterprise虚拟住宅企业Virtual flexibility matrix虚拟柔度矩阵virtual battle environment虚拟战场环境virtual slope walking gait虚拟斜坡步态virtual training simulator模拟训练系统virtual coherence function虚相干函数virtual storage addressing虚存储寻址virtual PLC control system虚拟PLC控制系统