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free enterprise system

(Encyclopedia)free enterprise system: see capitalism. ...

Global Positioning System

(Encyclopedia)Global Positioning System: see navigation satellite. ...

galactic coordinate system

(Encyclopedia)galactic coordinate system, astronomical coordinate system in which the principal axis is the galactic equator (the intersection of the plane of the Milky Way with the celestial sphere) and the refere...

equatorial coordinate system

(Encyclopedia)CE5 Equatorial coordinate system equatorial coordinate system, the most commonly used astronomical coordinate system for indicating the positions of stars or other celestial objects on the celesti...

National Forest System

(Encyclopedia)National Forest System, federally owned reserves, c.191 million acres (77.4 million hectares), administered by the Forest Service of the U.S. Dept. of Agriculture. The system is made up of 155 nationa...

autonomic nervous system

(Encyclopedia)autonomic nervous system: see nervous system. ...

parasympathetic nervous system

(Encyclopedia)parasympathetic nervous system: see nervous system. ...

life support system

(Encyclopedia)life support system: see artificial life support; Life Support for Human Spaceflight under space science. ...

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...

central nervous system

(Encyclopedia)central nervous system: see nervous system. ...