- 这些名词均有“地图、图”之意。
chart指航海地图，也指图表。
map指标有国家大小、城市、铁路、河流、山脉、海洋等的地图。
graph多指用纵横坐标之间关系的曲线表示两个量之间的图表。
- plot upon a graph
- a visual representation of the relations between certain quantities plotted with reference to a set of axes
- represent by means of a graph