403Glossary of Terms and Abbreviations
Lacquer: A deposit resulting from the oxidation and polymerization of fuels and
lubricants when exposed to high temperatures; similar to, but harder than,
varnish.
Laminar Flow: A ow situation in which uid moves in parallel lamina or layers.
Laminar Particles: Particles generated in rolling element bearings, which have
been attened out by a rolling contact.
lb: Pound, a unit of mass (lb
m
) or force (lb
f
). Plural lbs.
LCA: Life cycle analysis or life cycle assessment.
Lead Naphthenate: A lead soap of naphthenic acids, the latter occurring naturally
in petroleum.
LHSV: Liquid hourly space velocity (volumetric ow rate per hour divided by vessel
volume).
License number: An identication number that is issued to ...