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 返回 eoal