eoal

常见例句

• opening up eoal seam in erosseut
  石门揭煤
• fully meehanized eoal mining with eaving of roof eoal
  综放开采
• The First-line Production Worker's Efficiency Compensation Design in State-owned Eoal Enterprises
  国有煤炭企业一线员工效率薪酬设计
• top eoal eavability
  顶煤冒放性
• eoal bed
  煤层
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