isotropic point source 各向同性点源
An apparent or pseudo change in the sign occurs when a stress trajectory passes through an isotropic point.
当一个主应力迹线通过一个各向同性点时，该符号会发生一个表面上的或虚假的改变。
They point out that the WMAP data clearly show that there are far more hot and cold spots at smaller angular scales, and that it is therefore wrong to assume that the microwave sky is isotropic.
他们指出WMAP的数据明显显示出在更小的角度尺度上具有更多的热点和冷点，因此假设微波背景各向同性是错误的。
The Green's function of the torsion problem of isotropic bar is utilized for the outsidesingular point method.
先引入坐标变换，将该问题转化成相应的各向同性杆的扭转问题。
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