This will require some trial an error until the trimmed windows surface edge become similar to the curve from 2 views curve.
这将需要一些审判的错误，直至表面修剪窗户边成为类似的曲线从2意见曲线。
2
All loose or damaged polyethylene shall be trimmed back to sound coating prior to cleaning, and the edge of the polyethylene shall be bevelled at an Angle of 30 with the steel surface.
所有损坏的聚乙烯应在清洁之前对其涂层进行测深，且聚乙烯边缘应与钢材表面成30度角。
3
The topology and geometry of solid is represented by trimmed curve surface and half-edge data structure.