A small differential radius of gyration will have less separation and sometimes produce one thick oil band around the ball, due to the lack of a significant preferred spin axis.

• 大RG差(HighRGDifferential)的球，会造成油线与油线间的较大间距，相反的，小RG差(LowRGDifferential)的球，所产生的油线间距也会较小，甚至有可能只会产生一条很宽的”油带”而已。