He designed a system based on five large reflectors, each 62 metres long and made of glass mirrors arranged to form a trough in the shape of a parabola.
基于5个大型反光器，他设计了一个玻璃镜子。每个反光器长62米，用玻璃镜子制作而成。
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This paper introduces the shape grinding process of the decides grid trough and the rule's contour and the process of grinding wheel truing, analyzes the process simulation by computer.
For the cover of rolled stainless steel plate welded shape, cover and vacuum sealing flange at the end of the trough of large vertical lathe machining fine car molding.