兑水 发表于 2009-11-7 14:28:40

ASTM E 1573-2002 用A级加权和1/3倍频带声压级评定大办公室...

E1573-02 Standard Test Method for Evaluating Masking Sound in Open Offices Using A-Weighted and One-Third Octave Band Sound Pressure Levels
页: [1]
查看完整版本: ASTM E 1573-2002 用A级加权和1/3倍频带声压级评定大办公室...