| 1. | Doping properties of mgb2 superconductor
硼化镁超导体的掺杂性质 |
| 2. | Neither magnesium nor boron brought particularly many electrons to mgb2
在硼化镁中，镁跟硼都没有提供特别多电子。 |
| 3. | We expected that this dense vapor would diffuse into the solid boron , producing pellets of mgb2
我们预期这麽浓的蒸气会扩散到固态硼的内部，然后产生颗粒状的硼化镁。 |
| 4. | This is not good news if the goal is to use mgb2 in magnets , which are meant to produce a strong field
如果我们打算用硼化镁来制作可以产生强磁场的磁铁，这可不是一件好事。 |
| 5. | To their great surprise , mgb2 defied these rules and blew away the barrier to higher temperatures
但是出乎所有人意料的，硼化镁推翻了这些规则，排除了通往更高转变温度路上的障碍。 |
| 6. | Mgb2 can be cooled by liquid hydrogen or liquid neon or by fairly cheap , closed - cycle refrigerators that can readily reach below 20 k
硼化镁可以藉由液态氢、液态氖或是相当便宜的封闭循环式冷冻机，轻易降温至20k以下。 |
| 7. | The critical current density of pure mgb2 is comparable to that of triniobium tin at low magnetic fields but falls off much more rapidly at higher fields
在低磁场下，硼化镁的临界电流密度与三铌化锡相当，但是在较高的磁场下却下降得很快。 |
| 8. | Sure enough , we found that in as little as two hours this process produced very high purity mgb2 in the form of a loosely sintered pellet ( like sandstone )
不出所料，在短短的两个小时内，我们发现这个制程确实能制造出零散烧结状的高纯度硼化镁颗粒（看起来像砂岩） 。 |
| 9. | Currently one of the major challenges associated with making mgb2 a useful superconducting material is to increase its critical current density at higher magnetic fields
要将硼化镁制成有用的超导材料，目前最主要的挑战之一，就是如何在较高的磁场下增加临界电流密度。 |
