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朱林君 《青海师范大学学报(自然科学版)》1997,(4):47-52
本文运用灰色预测系统，三次指数平滑法和多元回归法，对在正常年景下２０００年，２００５年和２０１０年青海粮食产需水平进行预测，并对结果作出分析讨论。 相似文献
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An unusual iron complex with formally zero oxidation state, iron bis（6,6’-dimethyl-2,2’-bipyridine）, was synthesized and its crystal structure was determined. Combination of experimental and theoretical studies reveals that the electronic structure of the complex is best described as Fe（II）(Mebipy-)2 with anionic Mebipy-ligands and high-spin Fe（II） center. 相似文献
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