1·The matrices in CwMtx include vectors and square matrices, where vectors include space vectors and quaternions.
CwMtx 中的矩阵包括向量和方阵，其中向量包括空间向量和四元数。
2·However, it was later discovered that quaternions can also be used in computer graphics, as an alternative and compact way to represent rotations.
然而，人们发现四元数也可以应用在计算机图形学上，作为表现旋转的可选择方法之一。
3·Compared to the Euler angles the main advantage of the quaternions expression of attitude motion is the avoidance of singular position in numeration procedure.
与欧拉角比较，姿态运动的四元数表达的主要优点是数值计算过程中不存在奇异位置。
4·Several weakly controled inequalities with relation to trace of quaternions matrices are proved, and relevant results in some references are generalized and improved.
证明了几个与四元数矩阵迹有关的弱控制不等式，推广、改进了有关文献的相应结果。
5·The criterion of equality of two quaternions is that their scalar parts shall be equal.
两个四元数相等的准则是，它们的数量部分相等。