严格下三角矩阵
strictly lower triangular matrix
上三角形矩阵
Upper triangular matrix
upconversion phosphors and infrared laser sensor quantex
UPC
单位下三角阵
unit lower triangular matrix
burrow porosity
anodic aluminum oxide (AAO) template
准下三角阵
quasi-undertriangular matrices
最简准下三角阵
simplest quasi-undertriangular matrices
等角三角形命题
equiangular triangleproposition
等腰直角三角形波导
isosceles-right triangular waveguide
等腰直角三角形网
right-triangle irregular network