high - hot-
- holding temperature
- holding time
- holding vessel
- holding-down gear
- holding-melting furnace
- holdup-hold-down roof
- hole
- hole detector
- hole diffusion
- hole expansion test
- hole flanging
- hole in clouds
- hole patching
- hole pattern
- hole-type conductivity
- holed
- hollow bar
- hollow beam
- hollow billet
- hollow casting
- hollow die
- hollow forging
- hollow ingot
- hollow pattern
- hollow punch
- hollow shape
- hollow space
- hollow throat
- hollow water-cooled block of copper
- hollow-cylinder copper anode
- holmium
- holohedral class
- holster
- home
- home equipment
- home-ore practice
- homogenenizing
- homogeneous
- homogeneous alloy
- homogeneous carburizing