On the other hand, in the four years since the discovery of superconductivity in this compound, the research community has made considerable improvements in critical current density, both in the low-field value and, perhaps more important, in the higher-f
On the other hand, in the four years since the discovery of superconductivity in this compound, the research community has made considerable improvements in critical current density, both in the low-field value and, perhaps more important, in the higher-f
另一方面，在发现这个化合物具有超导性的四年后，不论是在低磁场，或者是在更重要的较高磁场下，这个研究领域的专家已经将临界电流密度提高了许多。