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backing sheet
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[经] 副份
backing sheet
backing shell
backing shunting
backing side
backing side trap
backing space
backing space technique
backing stage
backing storage
backing store
backing stores
backing strap
backing strip
backing strip (搪瓷...
backing tape
backing texture
backing turbine
backing up
backing up of sewage
backing vacuum
backing vacuum pump
backing vessel
backing weld
backing weld(ing)
backing welding
backing-off
backing-off angle
backing-off attachment
backing-off cone clutch
backing-off cutting
backing-off lathe
backing-out
backing-out punch
backing-up
backing-up roll
backing-up screw
backings
backjoint
backkick
backknee
backkward
backland
backlands
backlash
backlash adjusting screw
backlash allowance
backlash characteristics
backlash circuit
backlash compensation
backlash current
backlash eliminator
backlash error
backlash nonlinearity
backlash phenomena
backlash spring
backlash unit
backlash valve
backlasher
backlbow
backleg
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