对称

例句与用法

If a symmetrical matrix is positive definite, the determinants of all its minors are also positive .
如果对称矩阵是为正定者，它的所有子式的行列式也都是正的。
in steroid acetates the influence of the co grouping upon the symmetrical mode is small.
在甾醇乙酸酯中，CO基团对对称形式的影响较小。
A binary relation on a set that is reflexive and symmetric is called a compatible relation .
一个集合上的二元关系，如果它是自反的也是对称的，可称它为相容关系。
A symmetrical body rotating about an axis, one point of which is fixed, is called a top .
形状对称的一物体绕其轴转动，若轴上一点固定不动，则这个物体就叫做陀螺。
Erosion of gently dipping strata commonly results in the formation of asymmetrical ridges known as cuestas .
轻微倾斜地层的侵蚀通常造成非对称的山脊，称为单面山。