section a-a a-a  剖面

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 converge to a  收敛于

a rare allergic reaction to a blood transfusion  罕有的输血过敏

a slope modified to a terraced field  坡改梯

accession to a treaty  加入条约

Acknowledge and Performance to A Brand  品牌的知与行

adjoint pairs with respect to a testing sequence  层次伴随

affiliated to a ministry  部属

allotment to a feudal noble  采

assign to a job  安插

A-to-D  模拟对数字转换

A-to-D conversion  调变噪声; 模拟／数字转换

attributes to a function  隶属函数

Autoantibodies to Aβ  自身抗Aβ抗体

backward-convergence with respect to a testing seq  反向层次收敛

be projected to a line  积聚性