I believe molding two halves with a vacuum pump to provide pressure will produce a better structure and allow me to better control wall thickness.
我认为两半的模具加上真空泵来提供压力能使结构更好，我也能更好的控制壁厚。
2
As a result of a secondary vacuum infusion molding of advanced production technology, so the overall solid sheet without holes, stains can not easily enter the .
由于采用了二次真空灌注成型的先进生产工艺，所以板材整体实心无孔，污渍不能轻易进入。
3
The reflecting antenna of high precision surface and electrical property is manufactured through rational mold de- sign and wet molding process combined with vacuum bag molding process.