The peak effect (PE) in the critical current density of type II superconductors has been related to an order-disorder transition in the vortex lattice (VL), but its underlying physics remains a controversial issue. Intrinsic to the PE are strong metastabilities that frequently mask the stationary VL......
文章浏览阅读493次。转载来源：http://www.cnblogs.com/Kazaf/archive/2011/06/30/2094015.htmlrow_number() OVER (PARTITION BY COL1 ORDER BY COL2)表示根据COL1分组，在分组内部根据 COL2排序，而此函数计算的值就表示每组内部排序后的顺序编号（组内连续的......
文章浏览阅读2.1k次。Hql语句：SELECT *FROM Topic t WHERE t.id >2 ORDER BY t.type,t.number DESC依据sql的执行顺序，from---where---select---order by假设where t.id>2之后的结果如下则通过对t.type进行降序排序后结果为:再通过对t.number进行降序排序后......
