aspect ratio - 宽高比

The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side - the ratio of width to height, when the rectangle is oriented as a landscape.
几何形状的宽高比是其在不同维度中的尺寸之比。例如，当矩形被定向为 landscape 时，矩形的宽高比是其长边与短边的比值 - 宽度与高度的比值。

The aspect ratio is most often expressed as two integer numbers separated by a colon (x : y), less commonly as a simple or decimal fraction. The values x and y do not represent actual widths and heights but, rather, the proportion between width and height. As an example, 8:5, 16:10, 1.6:1, 8/5 and 1.6 are all ways of representing the same aspect ratio.
宽高比通常表示为两个以冒号 (x : y) 分隔的整数，较少表示为 simple or decimal fraction。x 和 y 值并不代表实际的宽度和高度，而是代表宽度和高度之间的比例。例如，8:5, 16:10, 1.6:1, 8/5 and 1.6 都是表示相同宽高比的方式。

In objects of more than two dimensions, such as hyperrectangles, the aspect ratio can still be defined as the ratio of the longest side to the shortest side.
在具有二维以上的对象 (例如超矩形) 中，宽高比仍可以定义为最长边与最短边之比。

hyperrectangle：超矩形