active sound attenuator
A special type of sound attenuator that incorporates a sound source which generates sound waves intended to cancel some of […]
Glossary
Glossary
Glossary
activated charcoal, activated carbon
Charcoal obtained by carbonizing organic material, usually in the absence of air; usually in granular or powdered form; highly effective
Glossary
activated rosin flux
A flux having a resin or rosin base and containing an additive to increase wetting by the solder.
Glossary
activated sludge
Sewage sediment that has been subjected to vigorous aeration and the action of microorganisms.
Glossary
active door
In a pair of doors, the leaf, 1 that is the first to open and is the leaf to which