| 释义 |
standard atmosphere
noun
1. : an arbitrary ideal set of atmospheric conditions (as used in calculations of aircraft performance); specifically : the international standard specifying a temperature of 15° C and 760 millimeters pressure at sea level with a vertical temperature gradient of -6.5° C per kilometer up to 11 kilometers altitude and uniform temperature of -56.5° C above that level
2. : atmosphere 5 |