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依高度計算大氣壓力
Pressure (atm) = [ 1 – { ( altitude(feet) / 1000 ) / 145.45 } ]5.2561
1 atm = 760 mmHg = 14.7 psia = 1.01325 bara = 101.325 kPa
1 foot = 0.3048 m
※此為基於國際標準大氣(International Standard Atmosphere)模型的近似公式,僅適用於對流層(約11公里以下高度)