Cavitation can make the surfacetrim have worn, and deep pits.
汽蚀可使阀内件的表面产生磨痕、深沟及凹坑。
2
Create in the right view the Windows upper line (extended) and extrude it until it pass over the projected Windows base line. Trim the base line with the extruded surface.
建立正确的观点的窗户上线(延长)和挤压它，直到它超越预测的窗户底线。修剪的基础按照挤表面。
3
Once created the desired surface, trim it with curves to get the desired result.