【摘要】 描述了球形容器及导管环焊缝X射线照相透照厚度比K函数 ,揭示了K与焦距 f、倾角α、球径R和壁厚δ之间的函数关系 ,并推导出环缝投影轨迹函数更多还原

【Abstract】 The function of radiographic thickness ratio K of the circumferential welds in spherical vessels and pipes was described. The functional relations between value K and focus to film distance f , the angle of inclination α , radius R and wall thickness δ were showed, and the projection trace function of circumferential weld was derived.更多还原