In the last ten years (1982~1991) 2.26 Mt of 10 kinds of nonferrous metals had been pro-duced in Hunan Province. Up to date the mining capacity achieves 6.52 Mt,
The FT-IR spectra for K<sub>2</sub>NbF<sub>7</sub>-FLINAK-O<sup>2-</sup> solution were measured and compared with the spectraof crystalline K<sub>2</sub>NbF<sub
Ga<sub>x</sub>In<sub>1-x</sub>As<sub>1-y</sub>Sb<sub>y</sub> alloys have been grown by atmospheric pressure MOCVD on n-GaSb(Te-doped)substrate.The sohd compositio