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

介PC控制器及其在直流高电梯上的应用,及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,能量转换效率高,单范围较广。泵出流连续、流量较大而无气蚀危险。