“ambient noise in the sea”的概念、定义、翻译、参考文献-科学参考

单词	ambient noise in the sea
释义	ambient noise in the sea Encyclopedia 理学水声探测释 ambient noise in the sea海洋环境噪声海洋本身的噪声。通常指用无指向性水听器在海洋中测量的噪声，除去换能器本身噪声和所有能确定的声源（如可分辨的船只噪声等）所产生的噪声后的剩余部分。
随便看	positive quadratic form positive quantity positive ray function positive real axis positive real control positive real function positive real number positive real part positive real system positive recurrent point positive recurrent state positive reinforcement positive relation positive result positive root positive root system positive rotation positive school of criminology positive selection positive self-adjoint operator positive self-regard positive semi-definite positive semi-definite form positive semi definite Hermitian matrix positive semi-definite Hermitian matrix

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