section a-a a-a  剖面

DICOM Long long a way  漫漫长路中文走近

not by a long shot  决不

not by a long sight  根本不

a long way off  在远处

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

go a long way  大有帮助

S-A(A-A) missile  地空导弹

A.A.A.  美国汽车协会

a vowel followed by a nasal consonant  黑液气化联合循环发电(BLIGCC); 鼻韵母

accelerated by a spring  弹簧加速的

analysis by a field case  六价铬; 实例分析

analysis by way of small grille  小网格分析

arc subtended by a chord  对弦弧

attack by a hidden enemy  暗箭

backward extruding by a disc with a central hole  漏盘反挤

block-printed edition prepared by a bookshop  坊本; 木活字; 目录盒挡板

by a finger’s breadth  差一点

by a neck  以微弱差距