clean operation zone

clear zone zone

trade-wind zone [= zone of trade wind]

air distribution on a zone by zone basis

damage zone kill zone

near zone to far zone transformation

north-south seismic zone (N-S seismic zone)

the alternative occurrence of fractured zone and non-fractured zone

Time-domain near-zone to far-zone transformation

zone by zone upgoing

zone by zone up-going production

zone-by-zone analysis

zone-by-zone production testing

zone-by-zone water flooding

Four Clean-ups Campaign

four clean-ups movement

“CLEAN” technique

1st grade clean operating room

2D clean up