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# 3D coordinate measurement

English-Chinese electricity dictionary (电气专业词典). 2013.

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• Coordinate-measuring machine — A coordinate measuring machine (CMM) is a device for measuring the physical geometrical characteristics of an object. This machine may be manually controlled by an operator or it may be computer controlled. Measurements are defined by a probe… …   Wikipedia

• Coordinate time — In the theory of relativity, it is convenient to express results in terms of a spacetime coordinate system relative to an implied observer. In many (but not all) coordinate systems, an event is specified by one time coordinate and three spatial… …   Wikipedia

• measurement system — Introduction       any of the systems used in the process of associating numbers with physical quantities and phenomena (metrology). Although the concept of weights and measures (measurement) today includes such factors as temperature, luminosity …   Universalium

• Coordinate geometry — Geometry Ge*om e*try, n.; pl. {Geometries}[F. g[ e]om[ e]trie, L. geometria, fr. Gr. ?, fr. ? to measure land; ge a, gh^, the earth + ? to measure. So called because one of its earliest and most important applications was to the measurement of… …   The Collaborative International Dictionary of English

• coordinate system — A method of land description. It uses a measurement based on an intersection of a defined north south axis and a defined east west axis …   Black's law dictionary

• Cartesian coordinate system — Illustration of a Cartesian coordinate plane. Four points are marked and labeled with their coordinates: (2, 3) in green, (−3, 1) in red, (−1.5, −2.5) in blue, and the origin (0, 0) in purple. A Cartesian coordinate system specifies each point… …   Wikipedia

• Celestial coordinate system — For other uses of Celestial , see Celestial (disambiguation). Orientation of Astronomical Coordinates Orientation of the galactic, ecliptic and equatorial coordinate systems, projected on the celestial sphere, showing the galactic equator (black) …   Wikipedia

• Geographic coordinate system — Map of Earth showing lines of latitude (horizontally) and longitude (vertically), Eckert VI projection; large version (pdf, 3.12MB) …   Wikipedia

• Antenna measurement — techniques refers to the testing of antennas to ensure that the antenna meets specifications or simply to characterize it. Typical parameters of antennas are gain, radiation pattern, beamwidth, polarization, and impedance.The antenna pattern is… …   Wikipedia

• hour — (h or hr)    1. a traditional unit of time, equal to 60 minutes, or 3600 seconds, or 1/24 day2. The custom of dividing the daylight into 12 hours goes back at least as far as the Babylonians, who liked to divide units by 12 because groups of 12… …   Dictionary of units of measurement

• second —    1. (s or sec or )    a fundamental unit of time in all measuring systems and the SI base unit of time. The name simply means that this unit is the second division of the hour, the minute being the first (see minute ). The second was defined …   Dictionary of units of measurement