常声，读音为cháng shēng ，汉语词语，意思是(1).固定的乐调。(2).正常的声调。
异常声明 exception declaration ; exception specification
不正常声音 Abnormal Sound ; Medicine An Abnormal Sound
形容日常声音 Everyday Sounds
异常声音 abnormal
正常声轨 normal audio track
非常声名狼藉 Became Very Notorious
正常声带图片 Normal Vocal Cord
反常声带运动 paradoxical vocal cord motion ; PVCM
又称反常声带运动 paradoxical vocal cord motion ; PVCM
的黎波里入夜之后，我们常能听见北约空袭的爆炸声，巨大的声响让人无法入睡。
Late into the night in Tripoli, we often hear Nato air strikes - the distinct boom of the explosions is enough to wake everyone up.
自卫时发出嘶嘶声，摆动尾部，但不进攻。可与沙龟同居一洞，常称沙龟蛇。
In defense it hisses and vibrates its tail but rarely strikes. It may share a burrow with a gopher tortoise, for which it is often called gopher snake.
通过采用外部声激励的方式，在低速轴流压气机内研究非定常尾流撞击效应对压气机流场结构以及时均气动性能的影响。
Influence of the wake impact effect on the flow field and its average performance in a low speed axial-flow compressor was investigated by using external acoustic excitations.
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