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visual probabilistic models视觉概率模型visual landscape assessment视觉景观评估Visual Hit Indicator Systemvisual analogue pain scales直观模拟疼痛标尺Visual Aircraft Recognition飞机目力识别visual-signal transmitter图像信号发射机visualization of distortion变形可视化visual communication design可视通信图案visual knowledge of a place对一个地方的实地观察visual dye titration method目测滴定法