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對圓底橢圓錐的表面展開進行了解析分析,提出了連接軸線共面兩圓管的直通接頭展開的計算方法,進而設計了繪制其展開圖的通用程序。
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大?。?span class="single-tag-height">757KB
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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