SFLAmý,\߇̎m߅LȡQBӵLܻܼ
䓵Ę˜߅L:a=b=20,25,30,35,40,45,50;
˜ʺ:t=3,4,5;ߴɸҪӆ
SFLCٲʽm(TDC),SFLD鹲巨m(TDF),ɷNmͨBLܻܼ-
ڷm