重点介绍轮廓照明、投光照明、内透照明和智能照明。
Outline lighting, projection lighting, internal penetrance lighting and intelligent lighting were introduced.
曲面工件，凸面对着射线源作单壁透照时，定位标记应在。
When radiographing the curved components whose convex side is toward the source and viewing single wall, location markers shall be used.
使用这种方法，一般只需两到四次透照就能完成封头焊缝的探伤。
It takes only two to four irradiations to inspect a sealing head weld by using the technology.
应用推荐