To study the effect of process parameters on the hydroformed T-shaped tubular parts, a new criterion to estimate the formability of T-shapedtube hydroforming is proposed.
为研究主要工艺参数对T型管液压成形性能的影响，本文提出一项综合评价指标，以评定T型管的成形质量。
2
The experimental results and mechanism of heat transfer enhancement of T—Shaped fin tube were discussed.
本文还讨论了试验结果及T形翅片管强化沸腾传热的机理。
3
A gymnasium consists of space truss structure and shopping basket shaped truss structure, and the T-type rigid connection joint is adopted when the circular tube is intersected.