分别对二维和三维不可压缩流体给出了一个较为直观的集中消失现象的充分条件,即若与近似解序列相应的弱*亏损测度所集中的集合在位置空间上的投影的Hausdorff维数小于1,则近似解序列在L~2中的弱极限是Euler方程的经典弱解.利用这个充分条件,验证了一个集中的例子. We give a sufficient condition for the two-dimensional and three-dimensional incompressible fluids to have a more intuitive and intuitive disappearing phenomenon. That is to say, if the Hausdorff dimension of the projection of the set in weakness-loss measure corresponding to the approximate solution series is less than 1, then the weak limit of the approximate solution sequence in L ~ 2 is the classical weak solution of the Euler equation. Using this sufficient condition, we prove a concentrated example.