It may also act as a visual signal of adulthood, along with growing breasts and widening hips in girls and deeper chests and beards in boys. 随着女孩乳房的日益增大和臀部的加宽以及男孩胸部的加深和胡须的长出，阴毛也可能作为成年人的一种视觉信号。
Meanwhile, a Blind Spot Information System registers if another vehicle is in the offset rear blind spot alongside the car and alerts the driver via a visual signal. 与此同时，一个盲点信息系统登记，如果另一辆车是在后方的盲点抵消一起汽车，并提醒司机通过视觉信号。
The imagery sensor of a robot vision system is defined as an electrooptical device that converts an optical image to a video signal. 机器人视觉系统的图像传感器为将光学图像转换为视频信号的光电设备。
The motion picture on the videodisk is encoded as frequency modulation, and the audio signal is mixed with the video signal. 视频盘上的视频信号以调频方式编码，音频信号混入视频信号中。
