This extraction is usually aided by the use of a Wehnelt cylinder.
这种提取通常借助于内尔特气缸。
2
Expound working principle of extraction check valves and the calculation methods of the cylinder design.
阐述了抽气止回阀的工作原理及气缸的设计计算方法。
3
The device thoughts and modification progress that modified one cylinder with high pressure, condensing steam turbine to a extraction and supplying heater ones are introduced.