bar

mbar

pa

atm

Torr

mTorr

1bar

1

103

105

0.987

0.750*103

0.750-106

1mbar

10-3

1

102

0.987*10-3

0.750

0.75*103

1pa(N/m2)

10-5

10-2

1

0.987*10-5

0.750*10-2

0.75*101

1atm=760Torr

1.01

1.01*103

1.01*105

1

0.750*103

0.750-106

1Torr

1.33-10-3

1.33

1.33*102

1.32*10-3

1

10-3

1mTorr

1.33-10-6

1.33*10-3

1.33*10-1

1.32*10-6

10-3

1

Pa=Pascal

例1mbar=102Pa