Gb	Eng
录像磁带一种比较宽的磁带，用来记录图像和对应的声音以进行复放或者播放	A relatively wide magnetic tape used to record visual images and associated sound for subsequent playback or broadcasting.
放大率图像的尺寸和实物尺寸之间的比率	The ratio of the size of an image to the size of an object.