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незатопленный водослив stresses
construct.	clear overfall; nonsubmerged overfall
hydr.	free overfall spillway; free spillweir; free weir; free-fall weir
hydrol.	clear overflow weir; free fall weir; free overfall weir
Makarov.	free overfall
road.wrk.	clear overfall weir
tech.	clear-overflow weir; free crest of spillway; free overflow; free spillway; free-flow weir; free-overfall weir; unsubmerged weir; free crest of a spillway

незатопленный водослив: 2 phrases in 2 subjects

Construction	1
Technology	1