When radiographing the curved components whose convexside is toward the source and viewing single wall, location markers shall be used.
曲面工件，凸面对着射线源作单壁透照时，定位标记应在。
2
Convexside of this matter, like, focused beauty and ugliness of human nature, but also highlighted the "Select from the heart," a powerful force.
这件事情像一面凸透镜，聚焦了人性的美丑，也凸显了“从心选择”的强大力量。
3
The analysis and calculation indicate that the image of a square for a wedge prism is in the shape of bell with a convexside rather than with a concave side.