attenuation of sound 中文意思是什麼

attenuation of sound 解釋
聲衰減
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  • of : OF ＝Old French 古法語。
  • sound : adj 1 健全的；強壯的，正常的；完好的，無疵的，沒有腐爛的（船、牙齒等）。2 正確的；正當的，合法的...
  1. Acoustics - hearing protectors part 1 : subjective method for the measurement of sound attenuation

    聲學護聽器第1部分：聲衰減測量的主觀方法
  2. Acoustics. hearing protectors. part 1 : subjective method for the measurement of sound attenuation

    聲學.聽力保護器.第1部分:聲音衰減測量的主觀方法
  3. This paper is based on the theory of environmental science, systematology and noise control engineering. noise control system and comprehensive harness of fan room have been researched. by the investigate, and measure of fan room noise. sound production principle, acoustics characteristic and the law of attenuation propagation have been analyzed. thus, the sound field model of fan roo has been put for put forward ward

    本文以環境科學、系統科學和噪聲控制學為理論基礎，對風機房噪聲控制系統及其綜合治理進行研究，通過對風機房噪聲污染調查監測，分析其發生機理、聲學特性和傳播過程衰減規律。
  4. 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。
  5. Acoustics - measurement of the in situ sound attenuation of a removable screen

    聲學可移動屏障聲衰減的現場測量
  6. Numerical simulations were performed and results show that significant attenuation of radiated acoustic power can be obtained, and sound radiation cancellation performance becomes better in low and medium frequencies

    進行了數值模擬，模擬結果表明，應用壓電片能有效地抑制聲吶設備中障板聲輻射，抑制中低頻的聲輻射效果更好。
  7. This will appeal to engineer in the design process of the public building air condition system, satisfied the room function request, at the same time, proceeding sound attenuation sound absorption design of the air condition system reasonably. according to the noise of air - condition system and the pipe regenerative noise, compute demanded sound deadening capacity. designing and choosing the right type and equally outline measures

    目前，在建築設計過程中通常首先計算空調設備運行時產生的設備噪聲以及空調管道工作時產生的再生噪聲；然後根據建築設計手冊中相應的噪聲允許值的規定計算出系統所必需的消聲量；最後根據空調系統的實際情況，科學地確定適宜的消聲器類型和規格，以此達到使用空間的噪聲要求。
  8. The extent of attenuation is proportional to the parameter under some assumptions in open channel flow. the lack of a sound theoretical basis for predicting the behavior of coarse particles means that experiments play a critical role

    在明渠二維恆定均勻流條件下，經過適當簡化和假定得到的結果表明，懸移質運動起到減弱流體紊動強度的作用，制紊作用隨參數的加大而增強。
  9. Acoustics. measurement of the in situ sound attenuation of a removable screen

    聲學.可移動屏蔽就地聲音衰減的測量
  10. Acoustics - hearing protectors - sound attenuation of hearing protectors - subjective method of measurement

    聽力保護器的聲衰減.主觀測量法
  11. Acoustics - measurement of office screen sound attenuation under specific laboratory conditions

    聲學規定實驗室條件下辦公室屏障聲衰減的測量
  12. Acoustics ; hearing protectors ; subjective method for the measurement of sound attenuation ; identical with iso 4869 - 1 : 1990

    聲學.聽力保護器.第1部分:聲衰減的主觀測量法
  13. We consider there are two kinds of mechanism causing the attenuation of sound in grain. one kind of mechanism regards the grain as quasi - porous media. it was the viscous resistance and heat conduction in the narrow passageways between the grain kernels that convert the sound energy into heat energy and lose it

    首次建立了準多孔介質的概念，可將堆積的糧食看作準多孔介質（顆粒介質） ，透入糧食內部的聲波在孔隙中傳播時，由於粘滯性和導熱性的效應，把聲能逐漸變成熱能耗散。
  14. Acoustics - methods for measuring the longitudinal sound speed and attenuation coefficient of rubbers and plastics in the frequency range 1mhz to 10mhz

    聲學1 10mhz頻率范圍內橡膠和塑料縱波聲速與衰減系數的測量方法
  15. Acoustics. attenuation of sound in air

    聲學.空氣中聲音的衰減
  16. Acoustics - attenuation of sound during propagation outdoors - part 2 : general method of calculation

    聲學戶外聲傳播的衰減第2部分:一般計算方法
  17. Acoustics - attenuation of sound during propagation outdoors - part 2 : general method of calculation iso 9613 - 2 : 1996

    聲學.室外傳播過程中聲的衰減.第2部分:一般計算方法
  18. Acoustics - attenuation of sound during propagation outdoors - part 1 : calculation of the absorption of sound by the atmosphere

    聲學戶外聲傳播衰減第1部分:大氣聲吸收的計算
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