The effects of dimension, symmetry and tangling or nesting features on assemblability are discussed, and the recognition methods from CAD model of these geometric features are given.

• 阐述了零件的外形尺寸、对称性以及嵌套和缠绕性等几何特征对零件可装配性的影响，并探讨了这些特征的自动识别方法。