这承重预制墙，由一薄板及沿其周界有一加固用的框架所组成。
This load supporting prefabricated wall consists of a thin plate reinforced along its boundaries by a frame.
介绍了一种由两组四杆机构组成的翻板机，用于薄板的翻面。根据约束条件要求，优化设计了翻板机的杆件尺寸。
This paper introduces a board-reversing machine that consists of two four-rod mechanisms, According to the restraint conditions, the rod size of board-reversing machine is optimized.
第一类是由一块非球面反射镜和分别放置在它的前面和焦点前的两块非球面薄板组成的。
The first type consists of an aspheric mirror and two thin aspheric correcting plates, which are located in front of the mirror and its focus respectively.
应用推荐