fractionaladj.微不足道的；断片的；分数的；小数的fractional turn分级转动fractional drift分部偏差fractional moneyn.<美>[总称]辅币fractional index分式指数fractional pixel小数像素fractional plate分馏塔盘fractional amoun零数fractional share零股fractional digit小数数字, 小数位fractional laser点阵激光