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Ft=Ff+Fi+Fw+Fj Ft>Ff+Fi+Fw+Fj FtFt≠Ff+Fi+Fw+Fj
Fi=Fc-Fl Fi=Fl-Fc Fl=Fc-Fi Fl=Fi-Fc
fi fail( ) ; fi bad( ) ; fi good( ) ; fi eof( ) ;
all the day all days the all day all day
from the 1st to the last day of the month from the 11th to the last day of the month from the 15th to the last day of the month from the 21st to the last day of the month
Ft=Ff+Fi+Fj Ft=Ff+Fw+Fi+Fj Ft=Ff+Fw+Fi Ft=Fw+Fi+Fj
是 不是 FI231是FI241不是 FI241是FI231不是
an unpleasant day a nice day a relaxing day a lucky day
last two relaxing two last relaxing relaxing last two last relaxing two
pH-pKa=logfu/fi pKa-pH=logfu/fi pH-pKa=fu/fi pH-pKa=fi/fu pKa-pH=log(l-fu/fi)
tomorrow last day the next day next day
FIAL540 FI128 FI148 FI168
Ft≥Ff+Fw+Fi+Fj Ft=Ff+Fi+Fj Ft>Ff+Fw+Fi+Fj Ft<Ff+Fw+Fi+Fj
PaO2/Fi0>300 200200PaO2/Fi0<200 PaO2/Fi0<100