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圆直通
圆口直通接头展开CAD
圆口直通接头展开CAD
对圆底椭圆锥的表面展开进行了解析分析,提出了连接轴线共面两圆管的直通接头展开的计算方法,进而设计了绘制其展开图的通用程序。
FISHER直通阀
www.Fisher.com Fisher r Sliding -Stem Valve Selection Guide Typical Fisher Sliding-Stem Control Valves W8861 W7957-2 easy -e?GX TBX STEAM CONDITIONING VALVE X0165 A broad range of Fisher valves, sizes, and materials is offered – fromNPS1/2 for general service to NPS20 and larger for demanding high -pressure steam, hydrocarbon, and noise services. FIELDVUE? digital valve controllers offer digital c
