A pressure of 15 lbs. on the square inch, which is that exerted by the atmosphere on the earth's surface.
单词 | θ7750 |
释义 | the world > the earth > weather and the atmosphere > movements and pressure conditions > [noun] > atmospheric pressure > units of atmospheric pressure (3) atmosphere1830 A pressure of 15 lbs. on the square inch, which is that exerted by the atmosphere on the earth's surface. standard atmosphere1842 (a) a unit of pressure, equal to 760 mm of mercury or 101,325 Pa (symbol atm); (b) any of various simple models of the atmosphere having a defined… inch1873 As the unit of measurement of atmospheric or other pressure: That amount of pressure which balances the weight of a column of mercury, an inch… |
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