特点：Features:

立式钟罩液压或电动升降结构、全无油、抽速大、极限真空度高、适应大型磁控管、速调管等微波器件排气。

Vertical bell-cap hydronic pressure or electronic raise and fall structue, totally 

oil-free, high-speed pump rate, ultra high vacuum degree, are suitable for the 

application of microwave components such as  large-scale magnetron and klystron.