【摘要】 指出在接管角焊缝圆周方向上穿透厚度的变化率和倾斜投影造成的影象畸变是确定透照工艺和进行缺陷评定的难点所在。提出目前可以采用并使之标准化、规范化的一些透照方法。更多还原

【Abstract】 It is pointed out that in the radiographic techniques and film interpretation there are some difficulties with the rate of change of penetrated thickness around the weld and the image distortion caused by obligue irradiating. Here presented some methods for radiographic examination that may be adopted and standardized currently.更多还原