狄肯的那双眼睛里充满着好奇，越瞪越圆。
圆度值等于1的生理性根尖孔形态为正圆形，大于1的为非正圆形，数值越接近于1形态越接近于正圆形。
A physiological foramen with roundness equal to 1 was defined to have a non-round instead of a round shape.
为了保持速度，在坡越陡、弯越圆的情况下，第二、三阶段的轨迹越短。
The steeper the slope and rounder the turn, the shorter phases-II and III have to be in order to maintain speed.
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