有效聲壓級 的英文怎麼說
中文拼音 [yǒuxiàoshēngyājí]
有效聲壓級
英文
effective spl-
Acoustics - hearing protectors - measurement of effective sound pressure levels for level - dependent sound - restoration ear muffs
聲學.聽力保護器.電平相關聲音恢復耳罩的有效聲壓級測量Acoustics - hearing protectors - part 2 : estimation of effective a - weighted sound pressure levels when hearing protectors are worn
聲學護聽器第2部分：戴護聽器時有效的a計權聲壓級估算Acoustics - hearing protectors - estimation of effective a - weighted sound pressure levels when hearing protectors are worn
聲學.聽力保護器.第2部分:當佩戴聽力保護器時對有效a -加權聲壓級的估算The designing of extractive technology for original pulse signal can manage the low - pass filter ， high - pass filter and the amplification by grade, filter interference and noise, and then provide support for the data obtaining of blood pressure
設計了合理優化的脈搏波動信號提取技術，使信號分級進行低通、高通濾波和放大，有效濾除各種干擾與噪聲，為血壓參數的提取做好硬體鋪墊。Acoustics - hearing protectors - part 4 : measurement of effective sound pressure levels for level - dependent sound - restoration ear - muffs
聲學.聽力保護器.第4部分:聲級相關聲音恢復耳罩有效聲壓級的測量Through redesigning of pipe system to alter its character and using the ways to isolate vibration and reduce vibration, it is yielded very good results of reducing the vibration and noise. in some points the acoustic pressure level drops very much, such as in the standard point of number one pump the acoustic pressure level drops 15db ( a ) and in the standard point of cistern also drops 15db ( a ), and in the highest point of the acoustic pressure before redesign drops from 105db ( a ) to 44db ( a ), and in the second floor the acoustic pressure level have reached the requirment
通過對管道結構的改造，減振和隔振措施的有效使用，使供水系統的振動和噪聲得到了有效的控制：使一號泵前的標準點和蓄水池前標準點的噪聲聲壓級都降低了15db （ a ） ，管道上測點的振動量降低了90 ；二樓居民門外的噪聲從55db （ a ）降到25db （ a ） ，遠低國家標準35db （ a ） ；在改造前噪聲最大點西側蓄水池的噪聲也由105db （ a ）降到44db （ a ） 。分享友人