It recommends that the calculation of geometrical spreading loss of running trains noise adopt the theories calculation formula or the simplified formula of directional characteristic of dipole.
推荐铁路列车运行噪声几何发散损失计算采用偶极子指向性特性的理论计算公式或简化公式。
A calculation method for geometrical spreading loss is provided which is adapted to the characteristics of running trains noise.
给出适合铁路列车运行噪声特点的几何发散损失计算方法。
应用推荐