2、导致X线穿过物质时衰减的原因是() The reason for the attenuation of X-rays through material is()

A.X线频率 X-rays' frequency B.X线波长 X-rays' wavelength C.X线能量 X-rays' energy D.物质和距离 Material and distance

时间:2024-03-06 12:31:30

相似题目