| 释义 |
standard atmosphere
Thesaurus| Noun | 1. |  standard atmosphere - a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigradeatm, standard pressure, atmospherepressure unit - a unit measuring force per unit areas.t.p., STP - standard temperature and pressure |
standard atmosphere
standard atmosphere[′stan·dərd ′at·mə‚sfir] (meteorology) A hypothetical vertical distribution of atmospheric temperature, pressure, and density which is taken to be representative of the atmosphere for purposes of pressure altimeter calibrations, aircraft performance calculations, aircraft and missile design, and ballistic tables; the air is assumed to obey the perfect gas law and hydrostatic equation, which, taken together, relate temperature, pressure, and density variations in the vertical; it is further assumed that the air contains no water vapor, and that the acceleration of gravity does not change with height. (physics) atmosphere standard atmosphereA pressure equivalent to 14.7 lb per sq in. (1.01 × 106 dynes per sq cm).standard atmosphere
stan·dard at·mos·phere (atm), 1. the pressure of the atmosphere at mean sea level at 273.15 K, equivalent to 1,013,250 dynes/cm2 or 101,325 Pa (N/m2 in the SI); 2. a standardized expression of the relation of barometric pressure, temperature, and other atmospheric variables as a function of altitude above sea level. stan·dard at·mo·sphere (atm) (stan'dărd at'mŏs-fēr) 1. The pressure of the atmosphere at mean sea level, equivalent to 1,013,250 dynes/cm2, or 101,325 Pa (N/m2 in the SI). 2. A standardized expression of the relation of barometric pressure, temperature, and other atmospheric variables as a function of altitude above sea level. standard atmosphereThe pressure of air at sea level when the temperature is 0°C (32°F). This is equal to 14.7 lb/sq in., or 760 torr, or 101,325 pascals. See also: atmospherestandard atmosphere
Related to standard atmosphere: Standard atmospheric pressureSynonyms for standard atmospherenoun a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigradeSynonyms- atm
- standard pressure
- atmosphere
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