Patterngrading is a very important function in apparel CAD system.
放码是服装工艺CAD系统中非常重要的一个功能。
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On the other hand, developers and providers of many clothing CAD system have made the particular patterngrading function as their system feature to publicize, explore and research.
It is pointed that vector calculation in costume patterngrading makes the moving of assistant points and lines whose directions and differences are difficult to be ensured easy and quick.