对称

• A spherically symmetric structure of the earth has been assumed .
  人们把地球的构造假设为球状对称。
• Tensors of this kind are called antimetric or skew-symmetric .
  这类张量叫做反对称张量或斜对称张量。
• The same holds true for any molecule with a center of symmetry .
  对任何有对称中心的分子同样是对的。
• a real symmetric matrix a can be expressed as u.
  一个实对称矩阵A能被表示为U。
• This is in striking contrast with the symmetries to be discussed later .
  这与后面要讨论的对称性截然不同。
• This matrix is symmetric and banded, the band being equal to four .
  这个矩阵是对称的且是带状的，带宽等于四。
• The "hat" distinguishes symmetry operations from symmetry elements .
  “帽号”用来将对称操作与对称元素区别开。
• The place was regular and balanced, as a gentleman's home ought to be .
  这所建筑物方正对称，绅士宅第本该如此。
• Here he inaugurated the spectral theory of bilinear symmetric forms .
  在这里他开创了双线性对称形式的光谱理论。
• The symmetry groups to which real molecules may belong are very numerous .
  真实分子可能属于的对称群是非常多的。