plain presser

例句：

1. 1. The machine is used to make flat plates for the food industry.
   这台机器用于为食品工业制造平板。
2. 2.The engineer designed a new type of plain presser that can produce high-quality plastic sheets.
   这位工程师设计了一种新型的平压机，能够生产出高质量的塑料板材。
3. 3.The plain presser was used to compress the material into uniform thickness.
   平压机被用来将材料压缩成均匀厚度。