| 摘要 |
<p>The proposed calibration jig is composed of two flaps (4a, 4b) folding up on each other to form a closed envelope at rest and opening through an articulation movement in order to expose radioactive calibration sources. The internal faces of the flaps are covered by plates (22) that let through the radiation from the sources while masking them, which faces, according to one important feature, are provided with impressions (21) located mainly around the sources so as thereat to adjust, both in terms of position and distance, by abutment, the apparatus to be calibrated.</p> |
