A piano-convex cylinder lens is utilized to convert the laser beam to plane, to forms a stripe on the welding works. Two frames of stripe image are captured by the cameras synchronously.

它采用安装在机器人末端的两台摄像机和一只激光器构成测量系统，激光器发出的光束经平凸柱面镜变成光平面，在焊件上形成条纹。

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Stress concentration zones caused by welding cracks are the most dangerous weak-links in service processes of welding works, so an effective safety evaluation of the links is of great importance.

焊接裂纹产生的应力集中区是焊接构件在服役过程中最为危险的一个薄弱环节，对这个环节进行有效的安全评估，具有重要意义。

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Temporary access openings may be provided on shells, bulkheads, decks, walls, etc. for convenience of works and to be closed in place by welding and inspected.

可以在船壳板、舱壁、甲板、墙壁等上开临时出入孔以便施工，应通过焊接对其进行适当的封闭并对其进行检验。

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