无磁滞状态
参考答案:
用静态磁场叠加一个具有一定幅度的交变场的方法所获得的一种状态。这个交变场的幅度最初使材料饱和,然后逐渐减弱到零。
汉族在历史上受道家思想影响,在宗教信仰上具有明显的务实特点,信奉多教多神。 ( )
______is a collection of data sets, which is so large and complex that is becomes difficult to process using on-hand database management tools or traditional data processing applications.
A.Big date
B.Cluster
C.Parallel computing
D.Data warehouse