sign pattern meaning in Chinese

符号类型
记号模型(层次语法)

3 . for the engraving of titles types signs patterns etc . on electronic parts and equipment , which will last long
3可在电子元件上雕刻名称型号标识图案等，极具永久性。
Then , in [ 4 ] , j . y . shao and l . h . you extended the concepts of the base from powerful sign pattern matrices to non - powerful irreducible generalized sign pattern matrices
然后，文[ 4 ]中，邵嘉裕和尤利华又把powerful符号矩阵基的概念推广到广义non - powerful不可约符号矩阵。
In this paper we mainly study the kth multi - g base index for non - powerful primitive irreducible generalized sign pattern matrices and primitive nearly reducible generalized sign pattern matrices . we obtain sharp ' upper bounds , together with complete characterization of the equality cases of the kth multi - g base index for primitive irreducible generalized sign pattern matrices and primitive nearly reducible generalized sign pattern matrices
在本文中我们研究了广义non - powerful不可约符号矩阵和几乎可约符号矩阵的广义k重基指数，得到了广义不可约符号矩阵的广义k重基指数的最好上界，以及广义几乎可约符号矩阵广义k重基指数的上界和某些达到上界的矩阵。