求翻译：电喇叭在-40 ℃～+80 ℃的温度进行耐低温、耐高温试验8小时后，发音正常，声压级应符合距离电喇叭2 m处的A计权声压级105-118 dB（A）的相关规定，试验后可比该规定低5dB。是什么意思？

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electric horn at C ~ + 80 - 40 ° °C temperature on the low temperature, high temperature test 8 hours after normal, pronunciation, sound pressure level shall be in accordance with the distance from the Horn 2m A sound pressure level meter to 105 - 118 (A dB) after the relevant provisions can be comp

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Electric speakers at a temperature of-40 ¡æ ~+80 ¡æ low temperature resistance, high temperature resistance test for 8 hours after the pronunciation normal-electric Horn sound pressure levels should be consistent with the distance of 2 m at a weight of sound pressure level 105-118 dB (a) the relevan

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