four sound track stereo radio 四声道立体声收音机
multiple sound track 复声道
Optical Sound Track 光录声迹
photographic sound track 相片声迹
sound track 声道; 声路; 声波沟迹; 录音道; 声迹; 空间-间隔-间距-留空白; 音轨; 声带; 声带音乐
sound track printer 声带印片机
sound-track engraving apparatus 录音机; 声迹刻纹机
two sound track stereo radio 双声道立体声收音机
going on the track of sound progress 走上良性发展的轨道
engineering district;maintenance of way section;track division;track district;track maintenance division 工务段
a sound mind in a sound body 有健康的身体才有健康的精神
infra-audible sound (=infrasonic sound) 次声
rate of sound and attenuation of sound 声速和声衰减
sound absorption-sound insulation-vibration isolation technology 吸声-隔声-隔振技术
sound intensity and sound intensity level 声强与声强级
sound navigation and ranging or sound radar 听测器; 声纳
sound pressure and pressure level of sound 声压与声压级
sound-on-sound 迭音
jointless line;continuously welded rail track;jointless track 无缝线路
non-NTDS track {dummy track} 非开战术系统资料追瞄