Operating at reduced pressure controlled atmosphere (equal to or less than 10 kPa measured above and within 300 mm of the gun nozzle exit) in a vacuum chamber capable of evacuation down to 0.01 Pa prior to the spraying process; or
1. 操作在荧光真空腔中进行，低压控制（在喷嘴出口300毫米内测得等于或小于10千帕），在喷射前，可抽真空达0.01帕；或