In order to form electroless plating film only on one side of glass substratedipped in a solution, a vacuumfixture has been developed.
为使浸渍于溶液中的玻璃基片仅仅一面形成镀膜，研制了一种玻璃真空夹具。
2
Electron beam welding machine consists of electron gun, high-voltage power, vacuum unit, vacuum welding chamber, electrical control system, fixture and working station running system and etc.