virtual set虚拟演播室virtualadj.实质的；【计】虚拟的virtual photoelectric switch虚拟光电开关virtual addressing operation虚拟寻址操作virtual digital oscilloscope虚拟数字示波器virtual learning communities虚拟学习社区virtual electronic workbench虚拟电子平台virtual property in internet网络虚拟财产Virtual collection resources虚拟馆藏资源Virtual Reality Reading Room虚拟现实阅览室virtual operation enterprise虚拟运营企业Virtual Media Access Controln.虚拟媒体接入控制