因此位图的地位依然很重要，但是对于那些可以分解成基本形状的图像，比如图表、标志、和化学公式等等，矢量文件格式天生就具有较高的效率。
So bitmaps play a useful role, but for those images that can be decomposed into basic shapes such as diagrams, logos, and chemical formulas, a vector file format is inherently more efficient.
矢量图(SVG或Macromedia Flash)通过基本的形状来描述图像，例如圆形、矩形、直线、曲线等等。
A vector image (SVG or Macromedia Flash) describes the image in terms of basic shapes such as circle, rectangle, lines, or curves.
矢量图形网格模型是实体的一种基本表示形式，特别对于描述具有复杂曲线曲面的实体可以说是一种最有效的表达方法。
Vector graph mesh model is a basic representation type of a body, particularly it is the most effective presentation method to representation complex body with curve and surface .
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