attn, at, attenuation frequency distortion, atrioventricular synchronization, Atherosclerosis ischemic disease, atheroselerotie brain infarction, attenuation characteristic curve, Atumin Dicyclomine Hydrochloride, atrioventricular junctional echo, At last they reached Shanghai., attenuation-total-reflection, At home in diplomatic circles. 返回 at work