| 摘要 |
<p>In a nuclear fuel-rod support grid composed of interleaved straps (40) defining fuel-rod receiving cells (46) and having thereon fuel-rod engaging dimple and spring structures (56, 58) each having two outer portions (60;70) and a middle portion (62;72), both longitudinal edges of each of the dimple and spring structures are provided each with a chamfer which is inclined with respect to and extends solely between the planes containing the opposite faces of the respective outer or middle portion. Preferably, the chamfers on the middle portion (62) of the dimple structures (56) and the outer and middle portions (70,72) of the spring structures (58) are one-sided, whereas the chamfers on the outer portions (60) of the dimple structures (56) are double-sided.</p> |
