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Abbr. for Association Francaise de Normalisation

In ancient Rome or Greece: copper, tin, or any alloy of these metals.

Paints which are packaged in a pressurized container for spray application. Pressure is supplied by compressed liquefied gas.

A spray gun for paint.

A bed of coarse material used for the rapid filtering of sewage; recirculation of the effluent may be employed.

Noise resulting from the flow of air; often generated in an airconditioning system when an airstream encounters protuberances, rough surfaces,