1. Moreover, the uniflow hydrocyclone has the traits of big capacity, low pressure drop and a little low separation efficiency in contrast to the returned flow hydrocyclone.

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

3. The electronic books has one kind of bidirectional interaction dissemination pattern, it has changed the uniflow spreading process of traditional books.

4. Finally, the field in a cylinder of a two-stroke uniflow scavenge diesel enginemeasured by the hot-wire probe is presented.

5. 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.

6. The result indicated that the equipment conforms to requirement of uniflow cleanroom completely.

7. At present, the bilateral resource flow more displays for South Korea to China's uniflow , does not favor the lasting stable development which both sides cooperate.