以坪湖煤矿洗精煤煤质化验结果为依据，探讨了该矿精煤灰分和高位发热量之间的相关关系，并得出其经验公式。
Based on the test data of clean coal of Penghu coal Mine, the correlation of ash and gross calorific value was discussed, and the empirical formula was educed in this paper.
研究了N种群互惠系统的概周期解和渐进概周期解，并得出其相关结果。
This paper is mainly concerned with the problem of almost periodic solution and asymptotically almost periodic solution of the N-species cooperation system and some results are given.
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