最大聲壓級 的英文怎麼說
中文拼音 [zuìdàshēngyājí]
最大聲壓級
英文
maximum sound pressure level-
Secondly, compared with some other kinds of comparator structure and based on the preamplifier - latch fast - compare theory, a novel topology of cmos preamplifier latch comparator circuit is presented. considering trade - off between kickback noise and power dissipation, reference resistance value is optimized. according to the encode demands of different stage resolution, clock - control encode circuit is designed
其後，在具體的子adc設計中，對比各比較器類型的優缺點，並基於預放大鎖存快速比較理論，提出一種新型高速低功耗預放大鎖存比較器電路拓撲;根據adc系統所允許的參考電壓最大波動限制，在回饋噪聲對輸入參考電平的影響和功耗之間折衷，確定優化的參考電阻串阻值;根據不同級精度的編碼要求，設計出時鐘控制編碼電路。In this paper the train running noise level has been predicted with the theory of point sound source. the sound exposure level of a train set pass, equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values, and some kinds of affixation attenuation on the course of noise propagation is considered, then the corresponding visual software has been developed. these make it convenient and precise to predict the noise level
本文從點聲源的理論出發，對列車運行噪聲進行預測計算，採用一列車通過時的單發暴露聲級、時間特性的最大聲壓級和一定時間內的等效聲級等作為噪聲評價量，並考慮了噪聲傳播過程中的各種附加衰減，編制了相應的可視化軟體，使噪聲預測計算方便、準確。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 ） 。Sound system equipment - headphones and earphones associated with portable audio equipment - maximum sound pressure level measurement methodology and limit considerations - part 1 : general method for " one package equipment "
音響系統設備.與便攜式音響設備相關的耳機和頭戴式耳機.最大聲壓級測量方法和限制考慮.第1部分: "單一包裝設備"的一般方法Sound system equipment - headphones and earphones associated with portable audio equipment - maximum sound pressure level measurement methodology and limit considerations - matching of sets with headphones if either or both are offered separately
音響系統設備.與便攜音頻設備相應的耳機和頭戴式耳機.最大聲壓級測量方法和限值考慮.單獨提供或同時提供時頭戴式耳機設置的匹配Sound system equipment : headphones and earphones associated with portable audio equipment - maximum sound pressure level measurement methodology and limit considerations - part 2 : matching of sets with headphones if either or both are offered separately
音響系統設備:便攜式音頻設備用頭戴式受話器和耳機.最大聲壓級測量方法和限值考慮.第2部分:單獨使用一個或同時使用兩個時頭戴式受話器設置的匹配分享友人