psi, atms, Ft.Hd. H2O at 20℃, in H2O, Kg/cm2, Meters H2O. in.Hg. At 20℃, mm.Hg. Cm.Hg, bar, Millibar, kPa. 等於多少. psi, atms, Ft.Hd. H2O at 20℃, in H2O
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