Pattern grading 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。
On the other hand, developers and providers of many clothing CAD system have made the particular pattern grading function as their system feature to publicize, explore and research.
另一方面，各服装CAD系统的开发、供应商也将独特的纸样放缩功能作为各自系统的特色进行宣传、探索与研究。
It is pointed that vector calculation in costume pattern grading makes the moving of assistant points and lines whose directions and differences are difficult to be ensured easy and quick.
将矢量公式运用于服装放码中，会使较难确定其档差的辅助点、线的推移变得非常简便快捷。
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