generalized positive matrices  广义正定矩阵

nonnegative(positive) matrices  非负(正)矩阵

Positive diagonal matrix  正对角矩阵; 正对角阵

block diagonal matrices  分块对角矩阵

diagonal matrices  对角阵

symmetric triple diagonal matrices  对称三对角矩阵

triple diagonal matrices  三对角矩阵

positive electrode [= positive pole]  阳[电]极; 正[电]极

positive-negative-positive  正-负-正

both diagonal and off-diagonal disorder  完全无序

diagonal line [= diagonal lines]  对角线; 斜剖面线

The inverse matrices of cyclic matrices  等差-等比循环矩阵

0-1 symmetric matrix of positive line  〔第3条〕

(BPG)black positive gel  黑色正电胶

(moisture content) of the positive electrode  正极含水量

1-positive definite  酸性磷酸酶（ACP）; 酸性磷酸酶; 碱性磷酸酶; 1-正定

3-terminal positive voltage adjustable regulator  三端正电压可调输出稳压器

5-HT positive immunoreactive cell  5-HT免疫活性细胞

a positive convection term  正对流项