section a-a a-a  剖面

minor of determinant  子行列式

determinant of a matrix  矩阵的行列式

diagonal of a determinant  行列式的对角线

expansion of a determinant  行列式的展开

order of a determinant  行列式的阶

rank of a determinant  行列式的秩

reduction of the order of a determinant  降阶法

A-A-A conjugation structure  A-A-A型共轭结构

S-A(A-A) missile  地空导弹

A.A.A.  美国汽车协会

a minor in English intensive reading  辅修英语精读

a system of a major field of specialization plus a minor field  长尾复叶耳蕨; 井底温度; 主副修制

accommodation space of minor fire risk  较小失火危险的起居处所

concentration of minor nutrient element  微量元素含量

crime of having sexual intercourse with a minor  奸淫幼女罪

fault of minor current ground connection  小电流接地故障

in a minor key  用低调

major-minor-minor PRF switching technique  主-副-副脉波覆送率切换技术