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поправка за зону малых скоростей stresses
geophys.	low-velocity layer correction; weathering correction; weathering layer correction; LVL adjustment (MichaelBurov); effect of weathering thickness; weathering effect
seism.	correction for low-velocity layer; correction for near-surface layer; correction for weathering (variations); low-velocity correction; low-velocity-layer correction; near-surface correction

поправка за зону малых скоростей: 11 phrases in 4 subjects

Geophysics	3
Makarov	3
Oilfields	1
Seismology	4