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
