visual ray可见射线visualadj.视觉的；视力的；看的见的；形象的n.画面；图象Visually-induced vertigo视力诱导性眩晕visual short-term memory视觉短时记忆visual negative afterimage视觉负后像visual information display直观信息显示visual part of the spectrum可视光谱区Visualization of simulation仿真可视化visual perception threshold视觉感知阈visual communication system可见通信系统visual contrast sensitivity视觉对比敏感度visual instrument technique虚拟仪器技术