- hydroponic ground
- hydropower engineering
- hydrostatic drive
- hydrostatic motion
- hydrostatic pressure
- hydrostatic test
- hydrothermal treatment
- hydrovibration
- hygroscopic materials
- hypabyssal rock
- hypaethral temple
- hypermart
- hypsometer
- hypsometric curve
- hypsometry
- hysteresis model
- hysteresis phenomenon
- I-girder
- I-section
- ice chute
- ice formation
- ice gorge
- ice lake
- ice loading
- ice removal
- ice ring
- ice stadium
- icon
- ideal clay
- ideal hinge
- ideal sand
- identification
- identification number
- identify
- idle stroke
- if amplifier
- igneous rock
- ignitable mixture
- igniter
- igniter plug
- ignition burner
- ignition coil
- ignition loss
- illegal
- illuminating gas
- illumination mast
- housing management
- housing need
- housing pan
- housing planning
- housing program
- housing shortage
- housing space
- housing stock
- housing type
- housing unit
- hover pallet
- howe truss
- HS loading
- hub flange
- Huckbolt
- huge
- huge blast
- hull
- hulling mill
- human work
- humble
- humble oneself
- humid gas
- humidify effects
- humidify fan
- humidifying capacity
- humidity factor
- hump yard
- humus tank
- hung floor
- hutch
- hybrid
- hybrid computer
- hydrate moisture
- hydrated
- hydrated compound
- hydrated lime
- hydration reaction
- hydration time
- hydraulic breaking
- hydraulic calculation
- hydraulic clearance
- hydraulic conductivity
- hydraulic conveying
- hydraulic conveyor
- hydraulic crane
- hydraulic cyclone
- hydraulic dock
- hydraulic dredger
- hydraulic drill
- hydraulic elevator
- hydraulic embankment
- hydraulic engineering
- hydraulic flow