hpa是 百帕(hundred pa)吧,那么1 MPa = 1000 kPa
1> 1 kPa = 10 hPa
2> 1Mpa(兆帕)=10^6Pa(帕),
3> 1hPa(百帕)=100Pa,
4> 1Mpa(兆帕)=10^3kPa(千帕)
5> 10hPa(百帕)=1kPa(千帕)
