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instrument-landing system
(Encyclopedia)CE5 Instrument-landing system (ILS), the most common instrument-landing approach system, uses two beams to guide an airplane. instrument-landing system (ILS), ground-based radio system designed to...ecliptic coordinate system
(Encyclopedia)ecliptic coordinate system, an astronomical coordinate system in which the principal coordinate axis is the ecliptic, the apparent path of the sun through the heavens. The ecliptic poles are the two p...Chinese examination system
(Encyclopedia)Chinese examination system, civil service recruitment method and educational system employed from the Han dynasty (206 b.c.–a.d. 220) until it was abolished by the Ch'ing dowager empress Tz'u Hsi in...Farm Credit System
(Encyclopedia)Farm Credit System: see Farm Credit Administration. ...altazimuth coordinate system
(Encyclopedia)altazimuth coordinate system ăltăzˈəməth [key] or horizon coordinate system, astronomical coordinate system in which the position of a body on the celestial sphere is described relative to an obs...pitot static system
(Encyclopedia)pitot static system pētōˈ [key], device for measuring the rate at which a fluid flows. Among the principal applications of the device are an airspeed indicator for aircraft and a distance and speed...transdermal delivery system
(Encyclopedia)transdermal delivery system: see skin patch. ...ring, mathematical system
(Encyclopedia)ring, in mathematics, system consisting of a set R of elements and two binary operations, such that addition makes R a commutative group and multiplication is associative and distributes over addition...parasympathetic nervous system
(Encyclopedia)parasympathetic nervous system: see nervous system. ...peripheral nervous system
(Encyclopedia)peripheral nervous system: see nervous system. ...Browse by Subject
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