To suppress the horizontal vibrations of a high-speed elevator, we develop its active hydraulic guide roller.
针对高速电梯的水平振动问题，开发了一种电梯液压主动导靴。
On basis of CAD and CAPP, we research and develop one set of design program system for welded pipe roller. This paper introduce us function and parameter design method of program system.
基于计算机辅助设计（ CAD）与计算机辅助工艺设计（C APP）开发了一种焊管轧辊设计系统。
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