聲阻抗法 的英文怎麼說
中文拼音 [shēngzǔkàngfǎ]
聲阻抗法
英文
acoustic impedance method-
New method for determination the environmental waste water was established by bulk acoustic wave impedance analysis technique, which is based on the inhibition of antibiotics to the growth of bacteria. the proposed method was applied to monitor the environmental wastewater
採用聲波阻抗分析技術，基於某些抗生素類藥物對微生物生長的抑制作用，建立了測定廢水污染程度的生物學新分析方法，並用於環境廢水污染程度的監測。Standard test method for impedance and absorption of acoustical materials by impedance tube method
用阻抗管法測定隔音材料的聲阻抗與吸音性的標準試驗方法Standard test method for impedance and absorption of acoustical materials using a tube, two microphones, and a digital frequency analysis system
管子雙擴音器和數字頻率分析系統用傳聲材料的阻抗和吸收的試驗方法Acoustics. testing of architectural acoustics. determination of sound absorption coefficient and impedance in a tube
聲學.駐波管法測定標準入射角聲阻抗和吸音率The mutual coupling between elements is expressed in terms of the normalized impedance matrix of the uniform linear array, the concise expressions for the optimized weight of the lms algorithm and the signal - to - interference - plus - noise ratio are given. the effect of mutual coupling on the performance of the sinr is illustrated with two examples, a method for compensating the mutual coupling is present, the compensation effect of this method is verified by example
用譜分析法，把陣元問的互耦用陣列的歸一化阻抗矩陣來描述，推導了均勻線陣的最佳權矢量及信號干擾噪聲比的表達式，模擬計算了互耦對自適應天線陣列的信號干擾噪聲比的影響，給出了一種校正互耦的方法，數值模擬了校正的效果。Anechoic coatings " efficiency is getted from its front and back many layer ' s transfer loss compared. first, absorptive characteristic of homogeneous material is analyzed thoroughly. then wkb perturbation means are used to calculate absorption coefficient of the impedance transition structure in this paper
本論文首先對均勻材料的吸聲特性做了深入的分析，並詳細討論了wkb微擾攝動法，利用wkb方法計算阻抗過渡結構的吸聲系數。The types of impedance transition and of composite resonant are now widely used, but the research in this area is not perfect. in this paper analytical means is used to study absorption coefficient ' s prediction models. diversified cavity structures and material parameters are analyzed in detail in order to the anechoic coalings " acoustical design
現代應用的吸聲層基本是阻抗過渡結構或復合諧振吸聲結構，但我國在這一領域的研究卻不盡如人意，針對水下消聲覆蓋層的吸聲系數預報及聲學設計問題，本論文利用多種解析方法研究聲學模型，並對各種模型的聲腔結構和材料參數做了詳細的分析，為消聲層的聲學設計打下了良好的基礎。Standard practice for portable hardness testing by the ultrasonic contact impedance method
使用超聲接觸阻抗法的便攜式硬度試驗的標準規程Constant current and constant voltage methods can be used to measure the speaker impedance curve respectively with these two types of amplifiers
這2種類型的功放能夠分別實現對揚聲器阻抗曲線使用恆流法和恆壓法進行測量。The system can resolve the noise and impedance on the power line and obviously improve the abilities of anti - disturbance and successful rate of communication. at the same time, the software realy method and arithmetic is also introduced to settle the problem of attenuation and increase the distance of carrier communication, it can satisfy the need of remote reading meter system
該系統有效地克服了電力線噪聲和阻抗變化等干擾因素，提高了抗干擾能力和通信成功率，同時提出軟體中繼的思想和演算法並加以實現，進一步抑制了線路衰減快的問題，使載波通信的距離增加，滿足了遠程抄表系統的要求。Code for measurement of sound - absorbing coefficient and specific acoustic inpedance of standing - wave
駐波管法吸聲系數與聲阻抗率測量規范Measurement of sound - absorbing coefficient and sound - resistance rate by method of standing wave tubes
駐波管法吸聲系數與聲阻抗率測量規范To provide a method that can be used to predict single or multi - layered microperforated panel ( mpp ) performance precisely, especially when the mpp has holes of different diameter and irregular shape
摘要提出用實驗測得含不同孔徑孔的微孔板聲阻抗率來預測由其形成的單層或多層微孔板的吸聲特性，並用傳遞矩陣法來預測該微孔板的各種組合結構的整體吸聲性能。The analytical mode is based on the theory of sound propagation in layered media. the concept of equivalent parameters is established. the absorption of sound energy by damping layer ' s is represented by use of complex sound impedance
解析模型以分層介質中的波動理論為基礎，建立了等效參數的概念，並運用聲阻抗的復數表示法把阻尼層對介質層聲能吸收的影響都考慮進去，通過比較敷設消聲覆蓋層前後多層傳遞損失的差異來獲得消聲層的效率。Acoustics - determination of sound absorption coefficient and impedance in impedance tubes - method using standing wave ratio
聲學.阻抗管中吸音率和阻抗的測定.駐波比率法Thickness reversion method of water layer behind high acoustic impedance from one - dimension reflective data
利用一維單道聲反射實現強聲阻抗介質下的流體層厚度反演方法Our method is based on non - linear convolution model and uses artificial nervous net algorithm and simulated annealing algorithm, introducing the acoustic impedance as condition of constrained solution to avoid the hypothesis of wavelet or reflection coefficient in common seismic inversion, and adopting the control of fine seismic interpretation model in extrapolation
反演方法以非線性褶積模型為基礎，引入井旁聲阻抗作為解的適定性的約束條件，避開一般地震反演對地震子波及反射系數的假設。反演外推採用精細地震解釋模型控制。演算法上，引用人工神經網路和模擬退火演算法。It is well known that the coupled interactions between the ship hull and the surrounding fluid field of explosion give rise great influence to both the fluid loadings over the structural wetted surface and the responses of the hull. jt is the coupling effect that provides the major difficulties in the underwater explosion induced dynamic responses of the ship structure. the second order doubly asymptotic approximation method ( dda2 ) has been commonly employed in the world to deal with the coupling effect
本文針對daa方法不適合於分析敷有聲阻抗與水差不多的聲學材料（如玻璃鋼與消聲瓦）的船體結構與水下沖擊波相互作用的局限性，依據聲波的反射和透射原理對二階daa方法的高頻段進行了改進，發展並提出了能夠分析聲學材料流固相互作用的adaa方法（ acousticdaa ） ，拓展了應用范圍，使現有的二階daa方法成為它的一個特例。By using these two methods hereinbefore, we have dealt with sound pulse tube data and 200 - set survey data of sea bottoms of five positions. we summarize the results as follows : 1 ) the all of surface layer sediment can be used on the sea bottom classification
利用反演和統計特徵量提取方法，對實驗室聲脈沖管數據和海上實際調查數據（ 200組）進行了具體分析處理，得出以下結論： （ 1 ）聲阻抗反演方法可以用於表層海底分類。Acoustics - determination of sound absorption coefficient and impedance in impedance tubes part 2 : transfer function method
聲學阻抗管中吸聲系數和聲阻抗的測量第2部分:傳遞函數法分享友人