Comparison of results using the active speech level meter and some meters described in this Recommendation can be found in Supplement No. 18 to Series P Recommendations.是什么意思_Comparison of results using the active speech level meter and some meters described in this Recommendation can be found in Supplement No. 18 to Series P Recommendations.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句