1990
乱気流 タービュランス Turbulence 1997
1990
1950
1980
1960
1990
2020
1950
2000
1960
1980
1990
1990
1990
1980
1970
1970
1970
1980
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990