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углубленное исследование stresses
scient.	serious study (Ivan Pisarev); serious research (Ivan Pisarev); serious examination (Ivan Pisarev); seriously studied (Ivan Pisarev); close examination (Ivan Pisarev); extensive study (Ivan Pisarev); careful examination (Ivan Pisarev); thorough review (Ivan Pisarev); careful review (Ivan Pisarev); in-depth examination (Ivan Pisarev); thorough study (Ivan Pisarev); careful study (Ivan Pisarev); thorough examination (Ivan Pisarev); careful consideration (Ivan Pisarev); scrutinized analysis (Ivan Pisarev); closer examination (Ivan Pisarev); closer inspection (Ivan Pisarev); carefully study (Ivan Pisarev); close study (Ivan Pisarev)
углублённое исследование
econ.	fundamental test; in-depth study
Makarov.	penetrating treatise
scient.	profound inquiry (I. Havkin)

углублённое исследование: 7 phrases in 6 subjects

Astronautics	1
General	2
Law	1
Medical	1
Oil / petroleum	1
Quality control and standards	1