The paper discusses the hydraulic schematic CAD means which can use computer mouse to map out hydraulic element graph block to lap the hydraulic system.
系统论述了液压原理图的CAD方法，实现了通过计算机鼠标绘制液压元件图形块进行液压系统原理图的搭接。
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Based on the analysis of the schematic diagram of pneumatic roofbolter, plot the route map and use it to analyse the cause of trouble with roofbolter.