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Terminology - B
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BENCH MARK:
Marks of known separation applied to a specimen and used to measure strain.
BLISTER:
A cavity or sac that deforms the surface of a material.
BLOOM:
A coating or efflorescence creating a discoloration or change in appearance of the surface of a rubber product caused by the migration of a liquid or solid to the surface.
BULK DENSITY:
The weight in air, of a unit volume of material, including both permeable and impermeable voids, normal to the material
BULKHEAD:
A flat boxlike structure used to shut off water flow in a dam that is located upstream from other gates or equipment, enabling repair or maintenance work.