maa5:=ma1 ref(ma11,1) and ref(ma11,1) ref(ma11,2);
mbb5:=ma1 ref(ma1,1);
mbb13:=ma3 ref(ma3,1);
mm:=mbb5 and mbb13;
maa20:=ma4 ref(ma4,1);
ma35:=maa3 or maa5;
maaa:=mbb13 and ma35;
mmm:=maaa or mm;
pl:=ma1/ma4 =1.05;
B1:= REF(C,1);
B2:= REF(C,2);
SS:=IF(C REF(C,1) AND REF(C,1) =REF(C,2),1,IF(C REF(C,1) AND REF(C,1) =REF(C,2),-1,IF(C REF(C,2) AND REF(C,2) REF(C,1),2,IF(C REF(C,2) AND REF(C,2) REF(C,1),-2,0))));
SM:=IF(REF(SS,1) 0,REF(SS,1),IF(REF(SS,2) 0,REF(SS,2),IF(REF(SS,3) 0,REF(SS,3),IF(REF(SS,5) 0,REF(SS,5),IF(REF(SS,6) 0,REF(SS,6),IF(REF(SS,7) 0,REF(SS,7),0))))));
mc:=IF(REF(SS,1) 0,B2,IF(SM 0,MIN(B1,B2),MAX(B1,B2)));
towfh:=CROSS(c,mc) ;
C1:=C;
C2:=REF(C,1);
c3:=ref(c,2);
htow:=C1
tow:=towfh or htow;
穿三线:=low =ma4 and c ma1 and c ma2 and c
vv:=vol =ref((vol/2),1);
tow and mmm and pl and vv and 穿三线 ;
