射线照相的几何条件是影响照相质量的重要因素。

Geometrical conditions are important factors influencing the quality of photos by radioactive rays.

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简要评述小直径管对接焊缝射线照相的特点、方法以及现行技术规定。

The status of the radiographic technology for the butt-welded joints in small diameter tubes are re-viewed briefly. The key points are discussed for the development of radiographic technology.

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干法射线照相术显示头顶上的伤口是由一个相对较钝的物体造成的。

Xeroradiography revealed the scar on top of the head was caused by a relatively blunt object.

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