grou - high
- heavy-mass valley
- heavy-media process
- heavy-media separation
- heavy-melting steel
- heavy-plate shears
- heavy-plate straightener
- heavy-rail motor car
- heavy-set diamond drill bit
- heavy-shrink fitting
- heavy-tonnage compressor
- heavy-traffic line
- heavy-train traffic
- heavy-unit train service
- heavy-wall construction
- heavy-wall pipe
- heavy-walled tube
- heavy-water moderator
- heavy-water plant
- heavy-water reactor
- heavy-weight drill pipe