low global warming potencial substance

warming round

warming-up by idling

warming-up effect

warming-up

warming point

warming tent

low-RCS target / low-radar-cross-section target

low flying aircraft / low-flying aircraft

low-flying, low-speed drone

combustible substance

flammable substance

illicit substance (counter-narcotics)

substance abuse

working substance

inflammable substance

ozone depleting substance

non-toxic harmful substance

substance

biological active substance

explosive substance

hazardous substance

highly toxic substance

liquid state of substance

nitrogen-containing substance

priority substance

pyrotechnic substance

soluble substance

toxic substance

radioactive substance

chemically hazardous substance

differential global-positioning system (DGPS)

differential global-positioning system surveying