hardenability
hardenable
hardener
hardening
hardening-on
hardenite
hard-faced
hard-facing
hardfacing
hard-finish
  hard-glass
hard-hat
hardhead
hard-limiter
hard-magnetic
hardness
hard-racing
hard-rock
hardrock
hard-rubber
hard-sectored

    hard-glass fiber

    волокно из тугоплавкого стекла