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418. In phonetics, advanced tongue root ( ATR) and retracted tongue root ( RTR) are contrasting states of the root of the tongue during the pronunciation of vowels in some languages, especially in Western and Eastern Africa, but also in Kazakh and Mongolian. ATR vs RTR was once suggested to be the basis for the distinction between tense and lax ...
Website. atr-aircraft .com. ATR 42, 22.67 m long. ATR 72, 27.17 m long. ATR ( French: Avions de transport régional; Italian: Aerei da Trasporto Regionale; or "Regional Transport Airplanes" in English) is a Franco - Italian aircraft manufacturer headquartered in Blagnac, France, a suburb of Toulouse. [ 4]
Attenuated total reflectance. Attenuated total reflection ( ATR) is a sampling technique used in conjunction with infrared spectroscopy which enables samples to be examined directly in the solid or liquid state without further preparation. [1] Light undergoes multiple internal reflections in the crystal of high refractive index, shown in yellow.
Level (optical instrument) Modern automatic level in use on a construction site. A level is an optical instrument used to establish or verify points in the same horizontal plane in a process known as levelling. It is used in conjunction with a levelling staff to establish the relative height or levels (the vertical separation) of objects or marks.
The ATR 72 is a twin-engine turboprop, short-haul regional airliner developed and produced in France and Italy by aircraft manufacturer ATR (Aerei da Trasporto Regionale or Avions de transport régional), a joint venture formed by French aerospace company Aérospatiale (now Airbus) and Italian aviation conglomerate Aeritalia (now Leonardo S.p.A. ).
t. e. Technology readiness levels ( TRLs) are a method for estimating the maturity of technologies during the acquisition phase of a program. TRLs enable consistent and uniform discussions of technical maturity across different types of technology. [ 1] TRL is determined during a technology readiness assessment ( TRA) that examines program ...
The ATR 72 is a twin-engine turboprop, short-haul regional airliner developed and produced in France and Italy by aircraft manufacturer ATR. The number "72" in its name is derived from the aircraft's typical standard seating capacity of 72 passengers. The ATR 72 has also been used as a corporate transport, cargo aircraft, and maritime patrol ...
Average true range. Average true range ( ATR) is a technical analysis volatility indicator originally developed by J. Welles Wilder, Jr. for commodities. [ 1][ 2] The indicator does not provide an indication of price trend, simply the degree of price volatility. [ 3] The average true range is an N-period smoothed moving average (SMMA) of the ...