- blemish
- blend ratio
- blending house
- block gap
- block group
- block handler
- block header
- block ice
- block machine
- block mark
- block nesting
- block out
- block parity
- block pavement
- block printing
- block retrieval
- block schema
- block sheave
- block signal
- block sort
- block standby
- block stone
- block transmission
- blockade
- blockage
- blocked impedance
- blocked state
- blocker
- blocking
- blocking device
- blocking die
- blocking layer
- blocking network
- blocking nut
- blocking rectifier
- blockmaking
- blocks
- blood plate
- bloom
- bloomed
- bloomery
- blooming mill
- blooming pass
- blooming train
- blow down
- blow hole
- blow mould
- blow roll
- blow table
- blow-by
- blow-off
- blower brush
- blower engine
- blower kiln
- blowgun
- blowing agent
- blowing down
- blowing method
- blowing pressure
- blowlamp
- blown film
- blown pitch
- blowoff purge
- blue annealing
- blue coal
- blue edema
- blue mud
- blue water
- bluestone
- bluff
- blunger
- blurred picture
- blush
- board room
- blaze-torch
- bleached flour
- bleaching
- bleaching chest
- bleaching clay
- bleaching liquor
- bleaching powder
- bled
- bleed
- bleed orifice
- bleeder
- bleeder current
- bleeder resistor
- bleeder screw
- bleeder well
- bleeding
- bleeding cock
- bleeding whites
- bleeding-off
- blench
- blend
- blended fuel
- blender
- blending
- blending chest
- blending problem