10 mineable coal seams in Inner Mongolia  内蒙十层可采煤层

circumferential seams of header  中国西北干旱地区; 集箱环缝

Close Coal Seams  近距煤层; 近距离煤层

close coal-seams  近距离煤层群

Close Distance Coal Seams  近距离煤层

Closed Coal Seams  近距离煤层

Close-distance Seams  近距离煤层

close-high coal seams  近距高煤层

COAL SEAMS  煤层; 煤层群

Coal Seams Correlation  煤层对比

coal seams group at close quarters  近距离煤层群

coal seams in upper member of Taiyuan Formation  太原组上段煤层

coal seams injection  煤层注水

coal seams outburst risk  煤层突出危险性

coal seams thickness  煤层厚度

concrete construction without seams in super lengt  超长无缝混凝土结构

coneiguous seams  近距离煤层

contiguous coal seams group  近距离煤层群

contiguous seams  极近距离煤层

Contrast Between Coal Seams  煤层对比