Absolute,Gage and Vacuum Pressures gage atm vac P os P atm tm 的 Absolute Absolute =0 vacuum abs vacuum Pressure Units 1 Pa 1 N/m2 1 bar 105 Pa 100 kPa 1 atm =1.013 bars =14.7 psi 上降文通大学 February 28,2019 20 SHANGHAI JIAO TONG UNIVERSITYFebruary 28, 2019 20 Absolute, Gage and Vacuum Pressures