section a-a a-a  剖面

Critical band wavelet transform  临界频带子波变换

discrete cosine transform in wavelet domain  小波域离散余弦变换

M-band wavelet transform  M带小波变换

data transform in frequency domain  频率域异常转换

cold damage in a narrow sense  狭义伤寒

in a narrow sense  在狭义上

in-band frequency assignment  带内频率分配; 带内频率指定

narrow -band in terference  窄带干扰

in-band frequency  频拨号内

energy in frequency band  频带能量

UHF signal in narrow-band  超高频窄带信号

A band A  带

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

S-A(A-A) missile  地空导弹

silicon controlled rectifier A-A frequency converter  可控硅交—交变频装置

A.A.A.  美国汽车协会

Narrow band frequency  窄带频率

Narrow Band Frequency Modulation  窄频带调频; 窄带档; 窄带调频