您要查找的是不是：
- u盘
- U矩阵U-matrix
- U／C矩阵U/C matrix
- U-D矩阵分解the U-D factorization
- 转换[过渡]矩阵transition matrix
- Ｓ矩阵S matrix
- U盘/优盘USB drive
- U形河曲内的土地在有这样的弯管的河里的地The land within such a bend of a river.
- 矩阵邻接matrix adjacency
- 矩阵式顺序控制器matrix sequence controller
- U形U-shaped
- Ｓ矩阵理论S matrix theory
- U形急转弯a hairpin turn
- 半矩阵semi matrix
- U型U shape
- 半单矩阵semisimple matrix
- U值U value
- U衬U-shaped lining
- 伴随式矩阵syndrome matrix
- 半负定矩阵negative semidefinite matrix
