When selecting the profile for the pocket, the boundary does not have to be a composite.
当选择袋子的轮廓时，边界没有必要必须转换为复合曲线。
2
By capturing the original explicit design semantics and design process, the general NC computation model could be set up and expressed as' a pocket and its boundary '.
参考显式的设计语义和过程信息，以“腔槽及其边界”形式构造通用的NC计算模型。
3
Pockets are produced by giving the Z height of the top and bottom of the pocket, and selecting a boundary curve.