采用螺旋理论，首先分别建立了3 -UPU并联角台机构在初始位形下和沿x轴方向发生移动后的一阶影响系数矩阵。
Based on the screw theory, the first-order effect coefficient matrixes of a 3-upu parallel pyramid mechanism under initial position and movement along X-coordinate axis are established.
目的探讨64层螺旋CT下肢动脉血管成像的最佳注射速率与重建矩阵的选择。
Objective To investigate the optimal injection rate and reconstruction matrix in 64-slice spiral CT lower extremity artery angiography.
为实现矩阵快速求逆，文中采用了螺旋边界条件下谱因式分解的方法。
Fortunately, however, the matrix has striped shape with a helical boundary conditions.
本文还给出了利用螺旋位移矩阵所建立的用于函数实现的数学模型及计算实例。
This thesis also gives the mathematical model established to use the screw displacement matrix. An numerical example is given.
采用线性代数的矩阵变换理论，推导出混合螺旋系线性相关性的一般性判据。
A linear independent general criterion of hybrid screw group was deduced based on the matrix transform theory of linear algebra.
采用线性代数的矩阵变换理论，推导出混合螺旋系线性相关性的一般性判据。
A linear independent general criterion of hybrid screw group was deduced based on the matrix transform theory of linear algebra.
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