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31. A rectangular waveguide type Six-port reflectometer worked in 8-12 GHz and coutrolled with a microcomputeris presented.

32. A one - dimensional computer simulation of oscillation characteristics has been carried out on 10 GHz GaAs Gunn diodes.

33. Main resonance mechanisms of ferromagnetic nanocrystalline particles in GHz band are natural resonance and exchange resonance.

34. Among 518 bright sources ( S 5 Ghz ≥1 . OJy ) at 5 GHz, at least 291 ( ≥56 % ) of them are known as being quasars.

35. The combination of the Urumqi Telescope and the 5 - GHz Receiver opens many scientific possibilities.

36. By using a laser cavity which consists of only two gratings and a resonant reflector, a N2-laser-pumped dye laser with a spectral linewidth of 1.3 GHz has been made.