A fixed signal is any signal that is permanently erected at a location. The term is used to distinguish normal signals and indicators from hand or lamp and flag signals, detonators, flares, bells, and other special-purpose methods of signalling.
ये भी पढ़े - योगासन का इतिहास तथा योग से होने वाले फायदे Source - IFRCA.org
No comments:
Post a Comment