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гидрозамок n stresses
aerohydr.	waterlock
automat.	pilot controlled check valve
mining.	valve of a hydraulic prop
plumb.	water seal (lxu5)
tech.	pilot-operated check valve; pilot-controlled check valve; carry-check valve; hydraulic lock; load check valve; load hold check valve; lock check valve; lock valve; locking valve

гидрозамок: 43 phrases in 2 subjects

Aviation	1
Technology	42