Extrusion die design for compound triple-layer plastic pipe by two extruding machines is introduced.
介绍用两台挤出机共挤复合三层塑料管材机头的模具设计。
2
Gold plated bright crystal necklace with triple-layer center featuring oval and teardrop-shaped fanning stone detail.
镀金闪亮水晶项链，中央三层依次垂下，带有椭圆和水滴放射状宝石设计。
3
Taking the Hangzhou Bay Sea-Crossing Bridge offshore platform as an example, the integral analysis of a kind of multi-storey steel building with triple-layer space trusses is introduced.