The method of stress analysis for pipe with special joints including Y joint and taper - taper joint is indicated through the analysis of vacuum transfer line.
本文通过对减压转油线的应力分析，说明了特殊形状三通管道（包括Y形三通、裤形三通） 的应力分析方法和过程。
The invariablenes condition of circle girth of the join-line end of the main pipe was set up and the join-lines on Y-tee to be ellipse was made certain.
建立了圆柱分支管y型三通的主管相贯线处的周长不变的条件，确定了相贯线为椭圆。
DQ-0772 Bonunion Huixin Coat Hat Rack Y-shaped body design, appearance patent and one structure patent for utility model, connected by necking pipe which makes top hook direction adjustable.
DQ-0772宝优妮惠心衣帽架 Y型主体设计，拥有外观专利与实用新型专利结构设计，缩口管连接，让顶部挂衣钩方向可以自由调节；
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