коксоподібний осад; твердий осад
coffee ground sludge
cold engine sludge
hot engine sludge
intermediate temperature sludge
granular sludge
hard
hard base
hard core
hard intelligence
hard kill
hard power
hard radiation
hard surface runway
hard target
hard-core projectile
ballistic plate, hard armour plate
hard deck
hard foam inner lining, shock absorbing liner
hard and deeply buried target
brake hard
arrow-shaped finned hard core projectile
hard carbon
hard core shell
hard extraction
hard fiber plug
hard pumped
hard rubber tire
hard running
hard service
hard standing
hard starting
hard steel plug