By combining the fuzzy appraisal and the gray unification, F-G synthetic appraisal is done of the 26 cross sections of 10 rivers around Xi 'an is carried out.
The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.
俄罗斯生物学家 G. F. Gause 在试验室进行了大量的两个物种的实验，试验中，当只有单一的资源时，其中一个物种将会灭绝。
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Historical rates, currency conversion codes e, F, and G are calculated.