Column efficiency of new VST was then studied with ethanol-water system and was compared with that of sievetray.
在此基础上，又用乙醇-水系统在常压下测定了该塔的塔板效率并与筛板塔进行了对比。
2
Some possible ways to improve the sievetray are discussed for different applications.
对不同情况下应用的筛孔板的改进工作也作了一些探讨。
3
The design method of structures of sievetray tower is discussed. Some new computation methods and simple formula are proposed. Simulated computations are carried out by practical examples.