audible warning sound 中文意思是什麼
audible warning sound
解釋
音響警告-
Acoustics - stationary audible warning devices used outdoors - field measurements for determination of sound emission quantities
聲學.室外用的固定音響警報裝置.確定聲音發射量的現場測量 -
Methods for the field measurement of the sound output of audible public warning devices installed at fixed locations outdoors
室外固定位置安裝的公共音響警告設備的聲音輸出現場測量 -
Acoustics - stationary audible warning devices used outdoors - part 1 : field measurements for determination of sound emission quantities
聲學戶外用固定式聽覺報警器第1部分:聲發射量的現場測定 -
Earth - moving machinery - machine - mounted forward and reverse audible warning alarm - sound test method and performance criteria
運土機械.機械安裝的前方和背面可聽見的警報.聲音試驗方法和性能標準
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