Developed excogitates of two decumbence and one hovizoutal molding die realized increasing height of branch pipe of heat pressure tee and reducing radius of synodical arc of tee.
研制出两套立式模具和一套卧式模具，实现了用工艺方法增加热挤压三通支管高度，缩小三通相贯区内拐角处圆弧半径的目的。
Regarding to submerged arc weld multi-pass weld track and height of weld gun, two-dimension track system is designed.
针对埋弧焊多道焊的焊缝跟踪以及焊枪高度跟踪问题，设计了一种二维跟踪系统。
Based on the arc substituting involute, the paper introduces a method for calculating the height and number of prisms in worm gear surface as well as the factors effecting them.
在以圆弧代替渐开线的基础上，导出了蜗轮齿侧棱面高度及数目的计算方法及影响他们的因素。
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