摘要
Usually, a ultra-high vacuum system must be baked entirely,if its vacuum degree needs to be reached to P≤10-8 Pa in a short time. But some systems can not be baked because of its position or structure. In this case, we must adopt other method to achieve the requested vacuum degree.
Usually, a ultra-high vacuum system must be baked entirely,if its vacuum degree needs to be reached to P≤10-8 Pa in a short time. But some systems can not be baked because of its position or structure. In this case, we must adopt other method to achieve the requested vacuum degree.
