A part has many voids that can be impregnated. One method is to use an oil bath. Another method uses vacuum first, then impregnation.
零件有许多可供填充的空间。一种方法是采用油浴。另一种方法是先抽真空然后再充满。
2
In the paper, the cathode spot movements and chopping current of pure graphite and copper-impregnated metallized graphite (Cu-C) in vacuum were investigated.