outer boundary造句

1、the extended two-dimensional outer boundary of a three-dimensional object
三维物体外层的扩展的二维的界限。

2、Related to, located in, or constituting an outer boundary or periphery.
周缘的关于、位于或组成外部边界或周缘的

3、the extended two-dimensional outer boundary of a three-dimensional object.
三维物体外层的扩展的二维的界限。