Introduces the application of PC programmable controller at uniflow high-speed elevator, and the principle of controlling uniflow high-speed elevator.

介绍PC可编程控制器直流高电梯上的应用,直流高电梯的控制原理。

The pulse pump is a new-type pump, in which the fluid successively flows out in one direction by means of the pulse effect in the uniflow pipe.

泵中流态单一,能效率高,单级扬程范围较广。泵出流连续、流较大而无气蚀危险。