In order to decrease the effect of sample heterogeneity on the result,the sample container was packed in a ball and then placed on a gyrate platform to be scanned. Two step motors which rotate in different speed and direction drive the ball rotate.

• 利用球体随机旋转性好的特点 ,将包装样品的容器装入球内并放在样品旋转台中 ,在两台速度不同、方向垂直的步进电机带动下 ,球体在旋转台上随机转动 ,实现对包装容器内的样品进行连续随机扫描 ,以达到减小由于包装容器内样品的非均匀性对测量结果的影响。