балістична якість / ефективність
ballistic plate pocket; pocket for a ceramic ballistic plate
semiballistic / semi ballistic / semi-ballistic / quasiballistic
fighting capacity/efficiency
high aerodynamic efficiency
loss of efficiency
operational efficiency
restoring fighting efficiency
artillery fire efficiency
fighting efficiency
fire effectiveness (efficiency)
air efficiency
all-around efficiency
approach efficiency
brake horsepower efficiency
increase of efficiency
indicated thermal efficiency
useful efficiency
high-efficiency engine
intrinsic efficiency
air burst advanced hit efficiency and destruction (AHEAD)
adiabatic efficiency
combustion efficiency
fuel efficiency
mechanical efficiency
overall efficiency
propulsive efficiency
volumetric efficiency
wind tunnel efficiency
aircraft efficiency charge
propeller efficiency
propulsive efficiency of a propeller
academic efficiency report