The optimal combinative scheme of composite high-yield agronomic measures for top yield level was showed by the frequency number analysis.
通过频数分析，得出指定产量水平下的最佳综合农艺措施给合方案。
Through comprehensive analysis of coal-bearing strata combinative characteristics in the area, figured out the strata belong to Lower Jurassic Beipiao Formation coal-bearing rock series.
通过对该区含煤地层组合特征综合分析，认为其应属下侏罗统北票组含煤岩系。
Through comprehensive analysis of coal-bearing strata combinative characteristics in the area, figured out the strata belong to Lower Jurassic Beipiao Formation coal-bearing rock series.
通过对该区含煤地层组合特征综合分析，认为其应属下侏罗统北票组含煤岩系。
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