matrix n. (pl. matrices 或matrixes) 1.【解剖学】子宫;母体;发源地,策源地,摇篮;【生物学】衬质细胞;间质;基质;母质。 2. 【矿物】母岩;脉石;【冶金】基体;【地质学;地理学】脉石;填质;杂矿石。 3. 【印刷】字模;型版,纸型;铸型,阴模。 4.【阵】(矩)阵,方阵;母式;【物理学】间架;【无线电】矩阵变换电路。 5.【染】原色〔红黄蓝白黑五种〕。 the matrix of a nail 【解剖学】指甲床。
The explicit method is widely used for its simpleness and little memory consumed with local time step and variable coefficients implicit residual smooth to accelerate the convergence procedure . according to yoon and jameson ' s ideas , an efficient implicit lu - sgs algorithm is carefully constructed by combing the advantages of lu factorization and symmetric - gauss - seidel technique in such a way to make use the l and u operators scalar diagonal matrices , thus the numeric algorithm requires only scalar inversion . the computational efficiency is greatly improved with this scheme 显式方法具有简单,消耗内存小等优点,并采用当地时间步长、变系数隐式残值光顺等加速收敛措施,在定常流动的模拟中得到了广泛的应用;根据yoon和jameson提出的简化正、负矩阵分裂,构造的l 、 u算子只需进行标量对角阵求逆,极大提高了流场数值求解过程的计算效率;采用newton类型的伪时间子迭代技术使时间推进精度提高至二阶。
In this thesis , the decoupling unit of vav system is designed in the way of feedforward conpensation . then the transfer function matrix of the feedforward conpensation decoupling unit of the 5 inputs & 5 outputs vav system is worked out . the decoupling conpensation unit can change the transfer function matrix of the open loop and closed loop control system into diagonal matrix , so that the coupling among the five control loops is eliminated , and vav system is decoupled 本文采用前馈补偿法设计了变风量空调系统的解耦补偿器,并得出了五输入、五输出变风量空调系统前馈补偿解耦器的传递函数矩阵,该解耦补偿器可以使本文所研究的变风量空调控制系统的开环传递函数矩阵和闭环传递函数矩阵都变换为对角矩阵,从而解除五个控制回路之间的耦合,使变风量空调系统实现解耦。
And in the second part , we consider the following four inverse eigenproblems : the reconstruction of normal five - diagonal matrix by two or three ordered eigenvalues and corresponding eigenvectors , and the reconstruction of real symmetric tridiagonal matrix and irreducible real symmetric tridiagonal matrix by three eigenvalues and corresponding eigenvectors , some sufficient conditions for existence of unique solution to the problems are given here , and some necessary and sufficient conditions for the existence of both unique solution and solution ( not unique ) to the latter are also given 第二个部分则讨论四类矩阵逆特征值问题:在考虑给定的两个或三个特征值次序的情况下构造唯一的规范五对角线矩阵:由三个给定的特征值和相应特征向量来构造唯一的实对称三对角线矩阵和不可约实对称三对角线矩阵。文章中给出了前者有唯一解的充分条件以及后者有唯一解和有解(不唯一)的充要条件,并且分别给出了其中唯一解的表达方式。
a square matrix with all elements not on the main diagonal equal to zero
百科解释
In linear algebra, a diagonal matrix is a matrix (usually a square matrix) in which the entries outside the main diagonal (?) are all zero. The diagonal entries themselves may or may not be zero.