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PR高,相关性低 PR低,相关性高 PR低,相关性低 PR高,相关性高
pR 22 > pR 12 > pR 134a pR 134a > pR 22 > pR 12 pR 22 > pR 134a > pR 12 pR 134a > pR 22 > pR 12
pa=pr+pn pr=pa+pn pr=pa; pa=pr—pn
are not observed is not observed were not observed was not observed
CR CR+PR PR CR+PR+NC CR+PR+NC+PD
VSWR=(1+(Pr/P开平方)/(1-(Pr/P开平方) VSWR=(1-(Pr/P开平方)/(1+(Pr/P开平方) VSWR=((Pr/P开平方+1)/(1+(Pr/P开平方) VSWR=(1+(Pr/P开平方)/((Pr/P开平方-1)
views rules attitudes methods
PR间期与心率成正比 PR间期与年龄成正比 PR间期常<0.12s PR间期<0.12s者占50%以上 以上都对
Pfr/Pr高; Pfr/Pr低; Pfr/Pr适中; 与Pfr/Pr无关。
PR=15~PR=25 PR=25~PR=35 PR=35~PR=45 PR=14~PR=55
are not preserved is not preserved were not preserved have not been preserved
promise profit procedure product
views rules attitudes methods
are not observed is not observed were not observed was not observed