ground-level
121Level sensor — Level sensors are used to detect liquid level. The liquid to be measured can be inside a container or can be in its natural form (e.g. a river or a lake). The level measurement can be either continuous or point values. Continuous level sensors… …
122Level — Lev el (l[e^]v [e^]l), n. [OE. level, livel, OF. livel, F. niveau, fr. L. libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Cf. {Librate}, {Libella}.] 1. A line or surface to which,… …
123Level of the sea — Level Lev el (l[e^]v [e^]l), n. [OE. level, livel, OF. livel, F. niveau, fr. L. libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Cf. {Librate}, {Libella}.] 1. A line or surface to… …
124Level — Lev el (l[e^]v [e^]l), a. 1. Even; flat; having no part higher than another; having, or conforming to, the curvature which belongs to the undisturbed liquid parts of the earth s surface; as, a level field; level ground; the level surface of a… …
125Level line — Level Lev el (l[e^]v [e^]l), a. 1. Even; flat; having no part higher than another; having, or conforming to, the curvature which belongs to the undisturbed liquid parts of the earth s surface; as, a level field; level ground; the level surface of …
126Level surface — Level Lev el (l[e^]v [e^]l), a. 1. Even; flat; having no part higher than another; having, or conforming to, the curvature which belongs to the undisturbed liquid parts of the earth s surface; as, a level field; level ground; the level surface of …
127Ground proximity warning system — (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. Another common name for such a system is ground collision warning system (GCWS). Commercial aircraft The system… …
128Ground-Based Midcourse Defense — (GMD) is a component of the national missile defense strategy of the United States administered by the U.S. Missile Defense Agency. Previously known as National Missile Defense (NMD), the name was changed in 2002 to differentiate it from other… …
