2026-05-06 02:21 浏览次数 18
分布规律
this paper introduces condition, coal seam form change, distribute law of rock nature and rock phase, thick coal seam collect conditim in hegang coal filed.
介绍了鹤岗煤田的地质情况,煤层空间形态变化,巖性、巖相的分布规律和厚煤层聚积条件。