Sheet warm forming process, sheet warm hydroforming process and sheetpress forging process are introduced in this paper.
介绍了镁合金薄壁板材的温热冲压成形技术、温热液压成形技术和局部热冲锻成形技术。
2
Place the flattened modeling clay onto one sheet of cardboard, then press the second sheet of cardboard on top of the clay.
把拍扁的纸粘土放在一张硬纸板上，然后用另外一张硬纸板盖住它。
3
Don't be shocked: the quality will vary considerably with regard to paper quality, cover design, layout, and whether it was run on a sheet-fed press or a web press.