narrow gun窄径电子枪narrowadj.有限的；狭窄的；精密的；度量小的n.海峡；隘路；狭窄部份v.变窄narrow-band-selective receiver窄带选择接收机narrow-band secure speech system窄带话密系统narrowing of the palpebral fissure目窍紧小Narrow-Band Digital Voice System窄带数字语音系统narrow-spectrum tone pip stimuli窄(频)谱短音刺激narrow-band frequency modulation窄带调频narrow shift frequency shift keying窄移频键控narrow lumbar spinal canal syndrome腰椎椎管狭窄综合征narrow-band audio encryption unit窄带音频加密机narrow correlator spacing algorithm窄相美