entities in drawing 图形实体
drawing entities
画实体
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In many situations, however, product is not come from designed conception but from some other entities, and it must be produced without any existing drawing, such as sculpture.
但现代生产中，如某些流线型物体、人体假肢、艺术雕塑品和汽车零件产品，其原始模型并非来自设计概念而是实物产品。
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