вторинна депресія, вторинний циклон
depression position finder
depression ratio
induction-pipe depression
depression contour
depression range finder
depression
depression angle
secondary blast effect
secondary burn
secondary dogwatch
secondary effect of blast wave
secondary fire sector
secondary high explosive
secondary injuries
secondary item
secondary landing
secondary magazine
secondary military occupational specialty (MOS)
secondary objective / target
secondary port
secondary task
secondary water terminal
secondary sector of fire
secondary fragmentation
buddy secondary life support system
secondary system of fire control
secondary frame
secondary control surfaces
secondary defect
additional secondary factor (ASF)
secondary alteration
secondary cyclone