President Xi Jinping stressed carrying forward the great spirit demonstrated by the Chinese People's Volunteers (CPV) army in the War to Resist US Aggression and Aid Korea in the new era and striving ...

阻焊膜 （solder mask or solder resist）是用于在焊接过程中及焊接之后提供介质和机械屏蔽的一种覆膜。阻焊膜的材料可以采用液体的或干膜形式。 大多数PCB被认为是绿色，实际上是阻焊油绿油的颜色。然而，阻焊膜可以以不同的 ...