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aluminum-alloy / aluminum alloy
corrosion-resistant alloy
light alloy
tungsten alloy
wearing bore
wearing qualities
wearing surface
wearing test machine
wearing course
copper-zinc alloy
zinc alloy
zinc-base alloy
high-temperature alloy
wearing-out battle
wearing-out strategy
mandatory wearing date
immersion-proof
pierce a bullet-proof vest
water-proof cloth
armor ballistic bullet proof face mask
fume-proof
bomb proof shelter / bombproof shelter
bomb-proof
bomb-proof protective deck
corrosion-proof
explosion-proof tank
incremental proof testing
freeze-proof
fuel-proof
gun proof mark
musket-proof
proof-of-concept aircraft