workable seam-sample of coal 可采煤样
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Through analysed workable coal seam change features, coal-rich zone, the distribution features of coal accumulation Center, describe the pattern of Chengzihe River Formation in Jixi coal Basin.
通过对可采煤层变化特征及富煤带、聚煤中心分布特征的分析，简述鸡西盆地城子河组煤层聚煤规律。
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