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backing eccentric rod
后行偏心杆
backing eccentric rod
backing fabric
backing field
backing film
backing gas
backing groove of weld
backing light
backing line
backing log
backing material
backing memory
backing movement
backing of drift dire...
backing of rafters
backing of smoke
backing of veneer
backing of wall
backing off
backing out
backing pages
backing paper
backing pass
backing pin
backing plank
backing plate
backing power
backing pressure
backing pulley
backing pump
backing register
backing ring
backing roll
backing rudder
backing run
backing run (weld)
backing sand
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)
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