1. In this paper, the developing course of semiconductor electron device is simply retrospected, which mainly includes the vacuum tube, solid transistor and nanoelectron device.

2. Application of power electron device results in decreasing of natural power factor of electric power system.

3. The electron device of the utility model can be sealed on the coil bobbin with high mechanical strength and compact conformation.

4. But in the application of electron device, it is demanded grealy that prepare conducting PPy thin film on the porous insulating substrate.

5. A type of electron device heat transfer performance test bed was developed.

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6. A solid - state photosensitive electron device whose current voltage charact eristic is a function of incident radiation.

7. The invention also discloses a electron device to better dissipating structure.

8. The electron device supporting frame can adjust the watching angle of the electronic device, the structure is simple, and the operation is convenient.

9. From this new physical principle, we have developed a new heterostructure intervalley transferred electron device (HITED).

10. The utility model is characterized in the integrated liquid barrel and electron device barrel at the lower section and reliable connection and beautiful appearance, etc.

11. Due to its outstanding heat transfer capacity and compact structure, the microchannel heat sink is the best choice for cooling of high-power electron device with small volume.

12. And the materials, theories and manufacture techniques adopted by different semiconductor electron device are compared.

13. The High Power Microwave (HPM) technology as a combination of pulse power technology, plasma physics and vacuum electron device is a rising science in the 1970s.

14. The prospect of CA methods for microelectronic process simulation and electron device analysis is discussed.

15. The heat dissipation of anodes or collectors is one of the essential problems in the design of high power electron device.

16. Because of wicked construction condition, the coat repaired task of large-sized electron device in the open air is always outstanding relatively special technical puzzle.

17. The three-phase AC self-regulating speed motor do not use high-power electron device, has non exterior additional speed-regulating equipment and does not bring pollution.

18. The soft magnetic ferrites materials possess low saturation, which limits electron device miniaturization.

19. Nowadays, with the development of micromation and high-power of the electron device such as notebook PC, steady system requires great heat elimination capability.