Influence of internal pressure on hydroforming of Y-shaped tubes

内压对 Y 型 三 通 管内高压成形影响研究

This paper describes the preparation and properties of AIN_xO_y solar energy selectively absorbing films for vacuum collecting tubes .

叙述真空 管集热器用的太阳能高温 选择性吸收膜氮氧化铝（AlNxO y）的制备及性能。

Investigation of Hydroforming Thin-walled Y-shaped Three-way Tubes and Effects of Axial Feed Ratio

薄壁 Y 型三通 管内高压成形及补料比的影响

Clamping of the T / Y tubes 10 ~ 12 days postoperatively resulted in a much lower blood ET positive rate as compared with that before operation as well as before clamping ( P < 0.001 );

术后10～12d夹闭T／ Y 管后ET阳性率明显低于术前和夹 管前（P＜0.001）；