选取此索引标签来检视这个视窗之后，当您在设计表面选取项目时会自动将其重新撤回。

After you select the TAB to view the window, it automatically retracts again as you select items on the design surface.

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按点-线-面的层次数据结构，选取几种有代表性的曲线曲面，实现了三维复杂外形的表面描述。

Based on a point line patch hierarchical data structure, three dimensional complex geometries are described by several typical kinds of surface patches.

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如果刀具参数选取得当，能在常规切削用量下获得在玻璃的塑性域内形成的、无微裂纹的加工表面。

Crack-free surface that is formed in ductile regime of glass can be obtained under conventional cutting conditions if the tool parameters are chosen properly.

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