隔聲特性 的英文怎麼說
中文拼音 [géshēngtèxìng]
隔聲特性
英文
sound insulation character- 隔 : partitionseparate
- 特 : Ⅰ形容詞(特殊; 超出一般) particular; special; exceptional; unusual Ⅱ副詞1 (特別) especially; v...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 特性 : characteristic(s); character; performance; features; properties; behaviour; response; character...
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Acoustics - test code for the determination of acoustical characteristics of sound barriers installed in a free field
聲學.無聲波場中安裝的隔音設備的聲學特性測定用試驗規程In order to analyze the influence of airplane noise on indoor sound environment in the vicinity of beijing international airport, different of buildings, such as villages, schools, offices, commercial building are choose as monitoring objects, the characteristic of sound insulation for building around beijing international airport are monitored and analyzed
摘要為較好的分析飛機噪聲對機場周圍居民室內聲環境的影響,研究選擇不同類型的民居房、學校(多層建築) 、基層機關辦公用房、商品房等為測試對象,對北京國際機場周邊地區建築物隔聲特性(插入損失)進行監測與分析,結果表明:現有民居、學校、機關辦公室的隔聲特性較差,商品房的隔聲效果較好。On the basis of above parts, this paper discusses the noise muffling of several kinds of plates. it gives the modifying formula of the mass law and verifies its accuracy with an example. at last, this paper explains the effect of stiffeners and damping on the plates " muffling characteristics
在認識隔聲理論的前提下,研究了板在寬頻域范圍上的隔聲特性,並總結了板材加筋以及敷設阻尼對結構隔聲的影響,具有一定的工程實用價值。The vermiculite could well resist heat, cold and fire ; it is antibacterial and capable of absorbing sound, while it can t coexist with acid. it could be burned in 800 - 1000 and changes its color to golden brown or silvery. and physical volume that inflation, equal to after the inflation originally physical volume of 8 - 20 times. from but made that material increase the ventilate air and the bibulous ability
蛭石經過焙燒,體積迅速膨脹,可增大至原體積的8 - 20倍,膨化后的蛭石呈顆粒狀,直徑大約0 . 5 - 0 . 8mm ,脹后的蛭石比重0 . 06 - 0 . 2噸立方米,具有隔熱耐凍抗菌防火吸聲等優異性能,但不耐酸,其介電特性也比較差。Road traffic noise reducing devices - test method for determining the acoustic performance - intrinsic characteristics - in situ values of sound reflection and airborne sound insulation
道路交通降噪設備.聲學性能測定的試驗方法.固有的特徵.聲音反射和空氣載聲隔絕的原地測定值The integrated kalman filter method is applied to vehicle navigation system in order to revise the error of ins, study a method of refraining filter divergence in order to improve filter accuracy. the federated filter is applied to the system in order to realize the failure detection and isolation and the question of information distribution. the adaptive filter is applied to the system in order to solve the question of inaccuracy or unknown noise statistics and to make navigation accuracy increase
在gps / ins車輛組合導航中,應用集中式卡爾曼濾波演算法校正ins的誤差,研究了抑制濾波發散的方法,提高了濾波精度;應用聯邦濾波實現了gps / ins的信息融合與信息分配,解決了當gps發生故障時的故障檢測與隔離問題;應用自適應濾波解決了實際中噪聲統計特性不準確或未知的問題,提高了導航精度。And the fractionally spaced equalizers ( fse ' s ) are also presented in this thesis through comparing the performances of fse ' s and the common baud spaced equalizers. the computer simulations show that the fse ' s are especially suitable to the underwater acoustic channel with low snrs
文章通過計算機模擬,對比了分數間隔均衡器和普通的波特間隔均衡器的性能特點,並且發現當水聲通道噪聲較強時,特別適合於採用分數間隔均衡器。Simulation results demonstrate theoretical derivation is correct and both sequences can be used in communication. based on the presented ds / sfh communication scheme, and employing msk as fh spread spectrum modulation, the performance is studied n the presence of partial band multitone jamming and additive white gaussian noise ( awgn )
根據所提出的混合ds sfh擴頻通信系統方案,採用msk相干調制,在假設直接序列擴頻后信號帶寬等於跳頻間隔的情況下,推導了系統在部分頻帶多頻干擾和加性白噪聲下的誤比特率公式。This article, with the study on transmissibility characteristics of vibration - isolating device viewed as a continuum, analysed characteristics of vibration - isolating device under the modles of discrete elastic components, poles and beams, so as to provide scientific evidence for resolving vibration problems of numerical - control machine tools
摘要將隔振器看作質量連續體,通過研究剛性基礎上數控機床隔振系統的傳遞率特性,分析比較了離散彈性元件、一維桿和梁等幾種隔振器模型方式下隔振系統的特性,為正確解決剛性基礎上數控機床振動噪聲控制的技術問題提供依據。Road traffic noise reducing devices. test method for determining the acoustic performance. part 2 : intrinsic characteristics of airborne sound insulation
道路交通噪音減弱裝置.聲性能測定試驗方法.第2部分:氣載聲隔絕固有特性Road traffic noise reducing devices - test method for determining the acoustic performance - intrinsic characteristics of airborne sound insulation
道路交通噪音減低裝置.測定聲學性能的試驗方法.空載隔音固有特性分享友人