Underspin;backspin;downspin是什么意思

网络释义

1)Underspin;backspin;downspin,倒旋2)spin-flip,自旋倒逆3)rotation version,旋转倒反4)outside spin,倒飞螺旋5)inverted spin,倒螺旋(航)6)reverse/rotation,倒退/旋转