Solve the problems existing in the sample of thin film with special shape by using the method of comparing fluorescence X-rays with scattered X-rays and practice the method in FP.

对于异常形状薄膜样品，存在着X射线荧光强度不足、分析位置不固定、定量值偏低的问题。

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X-rays, and observing how the rays are scattered, the researchers have concluded that the balls are full of particles with a diameter of about 50 billionths of a metre.

ECONOMIST: Ball lightning