美国马歇尔空间飞行中心的L. D. Harris等人研制成功计算机控制的外形检验系统,它是用X射线仪自动检验不同尺寸和不同材料的各种目标的内部结构的检验系统。这种系统可以用于新材料、精密加工以及组件的检验。自动检验系统的X—射线扫描仪测量密度、空间和时间分辨率可以达到最佳 L. D. Harris et al. At the Marshall Space Flight Center in the United States developed a computer-controlled contouring inspection system that automatically verifies the internal structures of various targets of different sizes and different materials using X-ray spectroscopy. This system can be used for new materials, precision machining and component inspection. Automated inspection of the system’s X-ray scanner to measure density, spatial and temporal resolution can be achieved the best