双层分采完井
two-zone single selection completion
按煤种分层开采
mining in slices according to coal rank
单管分层开采
single-string selective zone production
分层开采
zonal production
the layering mining
mining in slices
slicing mining
leaf mining
layer mining
slicing recovery
slice mining
stage development
zonal withdrawal
selective zone production
separate zone production
slice m ining
production from separate zones
slicing
slice
双管双层分采完成井
two-tubing dual completion well
Mantel-Haenszel分层分析
Mantel-Haenszel stratified analysis
电网分层分区
power system delamination and subarea
多层分层压裂
multiple separate layers fracturing