æ¤é¢ç¨å±é¨è´åé¦ä¸ä¼°ç®å级æ¾å¤§åæ°ä¸ºï¼
A1â-5.1K/0.1=-51
A2â-6.2//1.5/1=-1.22
A=A1A2=62.2
åé¦ç³»æ°ï¼F=0.1/(0.1+47)=0.00213
ç±äºæ æ³è¾¾å°AF>>1
æ以éç¯æ¾å¤§åæ°ï¼
Af=A/(1+AF)=62.2/(1+62.2x0.00213ï¼=55
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