常見(jiàn)例句雙語(yǔ)例句The longitudinal distributions of source intensity spectrum of several typical ships is given on the basis of time frequency analysis of the passage signature of ship radiated noises.籍助對(duì)艦船噪聲通過(guò)特性信號(hào)的時(shí)頻分析，得到了若干典型艦船的噪聲源強(qiáng)度譜縱向分布特性。 返回 spectrum signature analysis