[ 4*20+8*70R[正旋] ]
[ 4*20+8*70L[反旋] ]
[ 5*20+10*70R[正旋] ]
[ 5*20+10*70L[反旋] ]
[ 6*20+12*70R[正旋] ]
[ 6*20+12*70L[反旋] ]
[ 8*20+15*70R[正旋] ]
[ 8*20+15*70L[反旋] ]