structural noise 中文意思是什麼

structural noise 解釋
結構噪聲
  • structural : adj. 構造上的，結構上的，組織上的。adv. -ly
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  1. Objective : this panel study aimed to investigate effects of occupational noise exposure on ambulatory vascular structural properties in male workers

    目的：探討職業噪音暴露對男性工人之動態血管構造特性的影響。
  2. Background : epidemiologic studies have demonstrated that occupational noise exposure is associated with hypertension, but the related mechanism in vascular structural changes is unclear

    背景：流行病學研究已經證實職業噪音暴露與高血壓有關，但是與血管構造改變相關的機制仍不清楚。
  3. Taking the ffc ? 23a disk mill as a specimen model, the rotation noise generated from the interaction between fixed claws distributed on the outer and inner circle of the fixed claw plate and the corresponding moving claws has been separated in an experimental study by the modern analytic method of acoustic. thereby, a conclusion that the principal component of rotation noise in disk mill comes from the interaction between the fixed claws on the outer circle and the corresponding moving claws has been reached. in accordance with the above, modified noise reduction design for the structural parameters such as the number of claws on the fixed claw plate, shape of claws and the relative positions of the claws arranged on the outer circle and inner circle has been carried out

    本文以ffc ? 23a型爪式粉碎機為樣機，利用現代聲學測試分析手段對其工作時定齒盤內、外圈齒與相應動齒作用產生的旋轉噪聲進行了試驗分離研究，從而得出了爪式粉碎機旋轉噪聲的主要成分源自外圈定齒與其相互作用的動齒產生的噪聲，並以此為基礎，對定齒盤的齒數、齒形以及內、外圈齒的相對排列位置等結構參數進行了降噪改進設計，通過對比性試驗與分析，獲得了旋轉噪聲與上述結構參數間的關系，並取得了負載6 . 7db （ a ）的良好降噪效果。
  4. Erection of noise barriers and provision of associated civil, structural, electrical mechanical, geotechnical, utility, landscape and drainage works, fire services, waterworks, street lighting, traffic aids and directional signs

    豎設隔音屏障進行相關的土木結構機電土力公用設施環境美化和排水渠工程，安裝消防設備，並設置街道照明設施輔助交通設備及方向指示標志。
  5. Analysis on noise reduction of engine exhaust manifold cover and its structural improvement

    發動機排氣歧管罩降噪分析與結構改進
  6. ( 3 ) introducing the proportional damping, the finite element formula of structural - acoustic coupled system lined with sound absorbing materials is obtained. mode - superposition technique for modal frequency response analysis of coupled structure - acoustic systems is also used to deal with the sensitivities of the eigenvalues and eigenvectors of coupled systems for the purpose of reducing cavity interior noise in theory

    討論了阻尼降噪問題，建立了有阻尼聲振耦合系統的有限元模型，採用振型疊加法，將系統位移轉換到以固有振型為基向量，進行結構壁面有吸聲材料的聲振耦合系統響應的有限元分析與靈敏度分析，推導了比例阻尼條件的靈敏度計算公式。
  7. 2. the paper extracted some apropriate features ? different structural features and different statistical features. the structural feature, which has high accuracy, is used to classify the similar characters while the statistical feature, which is simple, speedy and stable, is used to enhance the ability of resisting noise

    2 、本文提取了具有旋轉、平移不變的結構特徵和統計特徵，利用前者高精度的特性進行相似字的區分，利用後者簡潔、高速、穩定性的特點來增強了系統的抗噪性能，從而充分發揮了二者各自的優勢。
  8. The early studies are mostly focused on the method of gluing piezoceramics on structural surfaces, which has some disadvantages such as difficulties to protect the ceramics and the connection wires, bad coupling with only one surface glued on the base materials, low signal - to - noise ratio etc. these problems can be solved using the embedded piezoceramics, and furthermore, the piezoceramics can be placed in the optimal positions, especially in the optimal deepness for the piezo - actuators, according to an optimization algorithm befor e they are embedded, so the actuator effects and sensor signals are thereby enhanced

    早期的研究主要集中在表面粘貼壓電片的結構，表面粘貼壓電片具有一些無法克服的缺點。本文著重進行利用埋入復合材料結構的壓電傳感器和壓電驅動器對其振動進行主動控制的相關理論和實驗研究，並介紹其相應結果。埋入型壓電材料的優點主要是能保護壓電傳感器和作動器及其連線、增強壓電材料和基體材料的耦合、優化埋入壓電陶瓷的深度和厚度可增強壓電傳感器的測量信號並提高信噪比等。
  9. But subway can produce serious vibration and noise in its operation, and bring out sub - structural noise and vibration of building along the line. this is a kind of serious pollution to urban environment, and sometimes affects the people ’ s working and living condition nearby. this has aroused more and more publics and relevant departments to pay attention on it

    但在運營過程中會產生很嚴重的振動和噪聲，並誘發沿線臨近建築物的振動和二次結構噪聲，這對于城市環境是一種嚴重的交通污染，給沿線人們的工作和生活造成了嚴重的影響，已經引起了越來越多的公眾和有關部門的重視。
  10. The epd and the highways department are jointly studying low - noise road surface materials that would be suitable for hong kong. they have published guidelines on noise barrier design which address the aesthetic and landscape considerations as well as structural and noise performance

    環保署與路政署正合力研究適用於香港的低噪音鋪路物料，並發出了隔音屏障設計的指引，就景觀結構及隔音效能提供意見。
  11. It has been proved that some structural adjustments may somehow cut down on the surface radiation noise of the engine, thus bringing down the overall noise level. basically it means to increase the structural rigidity and the damping so as to reduce the structural surface response under the same exciting force

    實踐表明，在結構上採取措施可以一定幅度地降低發動機的表面輻射噪聲，從而降低整機噪聲。控制的基本措施是增加結構剛度和阻尼，使得在同樣的激振力作用下減少結構表面響應。
  12. A serial generalized morphological filter with multi - structural element is used suppression white gaussian noise or pulse noise embedded in the speech signal. the paper compares morphological speech enhancement algorithm with classical approach on the feature of speech in the frequency domain and time domain

    本文針對形態學在數字語音信號增強中的應用演算法研究，採用多結構元素的廣義形態濾波器，主要用於對被高斯白噪聲或正負脈沖噪聲污染的語音信號的濾波增強，深入研究形態學濾波的語音增強演算法在語音時域、頻域對語音特徵參數的影響。
  13. So, the scope of this article is to give a tactic of wavelet - based applications in bridge structural health monitoring and damage detection by means of dynamic structural tests. analysis monitoring signal with muti - resolution analysis, dispelling signal noise with wavelet transform, obtain wavelet - based damage indicators and detect the presence and occurrence of damage, realize the on - line alarming in bridge structural health monitoring

    利用小波分析對大量的原始數據進行實時、有效的降噪處理，直接提取結構參數，對結構損傷及時進行預警，把基於小波分析的在線信號處理方法、損傷預警、結構損傷特徵參數的提取統一起來，實現橋梁結構的實時在線健康狀態監測。
  14. There are several methods that are usually applied in engineering practice to examine structure stress : resistance variation method, barkhousen noise method, x radial method and ultrasonic method, etc. with comparasion to others, the ultrasonic method is acknowledged to be one of the most promising non - damaging inspection method in structural stress measurement filed for its fine sensitivity, veracity and good operation features

    工程實踐中常用於應力檢測的方法有電阻應變法、巴克豪森法、 x射線法和超聲波法等。同其它檢測方法相比，超聲波應力檢測法具有靈敏度高、準確性好及可操作性強等優點，從而成為一種公認為最有前途的無損檢測方法。
  15. The structural optimization based on noise attenuation is studied, in which the thickness of each link is taken as the design variable, and the weighting sum of structural mass and measure of the structural acoustic performance is taken as the synthesis performance index

    選取機構桿件厚度為設計變量，以機構質量和聲輻射性能量度的加權和為目標函數，應用改進了的變尺度優化演算法對優化問題進行了求解。
  16. First of all, the emd - based wavelet threshold denoising algorithm is apllied to denoise noisy structural response data to reduce the effect resulting from noise. during the process of the empirical mode decomposition ( emd ), the two boundaries of the response signal are processed with semi - periodical ? semi - symmetrical method. subsequently, hilbert - huang transform ( hht ) is used in identifying structural intrinsic frequency

    這套技術用以解決實際工程應用中遇到的在信噪比較低情況下通過結構的響應信號來進行結構損傷識別問題，即先用基於emd的小波閾值去噪演算法對含噪結構響應進行去噪處理，以有效降低噪聲影響（在去噪的emd處理過程中，對信號的邊界採用「半周期半對稱」延括演算法來抑制邊界誤差） ，然後再用希爾伯特?黃變換（ hht ）進行結構的固有頻率識別，最後計算出結構剛度。
  17. Based on the conclusion of wave number analysis, a new dynamic equation taking the measure of structural acoustic performance is obtained by a set of transformation, which is much convenient for us to discuss the noise attenuation

    並依此對機構動態方程進行了改造，得出了一個以機構聲輻射性能的量度為變量的新的動態方程，為後面機構聲輻射控制研究提供了方便。
  18. This paper aimed at the low noise aerodynamic performance of automobile cooling fan, set out from the fluid dynamics and the mechanism of noise generation and radiation, mathematical model has been erected to analyze the influence of the main structural parameters on noise performance

    本文著眼于汽車冷卻風扇的低噪聲氣動性能，從汽車冷卻風扇的流體動力學理論和氣動噪聲的產生機理出發，建立數學模型，分析風扇主要結構參數對冷卻風扇噪聲性能的影響。
  19. The main content of this paper contains : summarizing the foundational theory of vibration and noise, and establishing the analysis and computation flow chart of noise acoustic field of mechanical vibration ; taking a close drum shell as the research object, analyzing its dynamic characteristics and vibration response using finite element method, then going with the structural - acoustic coupling analysis based on the acoustic model analysis of the aerial intracavity of the close drum shell

    論文的主要內容包括：對振動和噪聲的基礎理論進行了概述，並建立了結構振動噪聲聲場分析計算的流程圖。以封閉鼓形薄殼為分析對象，運用有限元法分析了其的動態特性及振動響應；同時在分析了封閉鼓形薄殼空氣內腔的聲學模態的基礎上，對其進行了聲固耦合分析；並作了該結構模型的外場聲固耦合諧響應分析。
  20. The company learning caterpillar and liugong workers manufacturing processes, complete structural acid, phosphate, such as domestic blasting advanced anti - rust treatment, and a famous painting works ( xuzhou daguang bi - component paint ), the aging, lasting sheen ( not guarantee complete year ofcolor, a long - bleaching ) often equipped with the original wood, weichai power ( using large fans, water tanks, powerful, heat and humidity for coastal operations, performance, reliability, low fuel consumption, low noise, functions

    本公司學習山工、柳工等製造加工工藝，整車結構件酸洗、磷化、拋丸等國內先進的防銹處理，採用國內知名工程油漆（徐州大光雙組份油漆） 、抗老化、光澤持久（保證整車一年不變色、長久不褪色） 。
分享友人
分享到 Line

分享到臉書