low frequency method 中文意思是什麼

low frequency method 解釋
低頻法
  • low : adj 1 低的；淺的，矮的。 low flight 低飛。 a low temperature 低溫。 low tide [water] 低潮。 The g...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. A lot of engineering applications are carried out using our proposed method in this paper, such as thermal deformation measurement of a car lamp, analysis of the super low frequency harmonic vibration of a piezoelectric ceramic, dynamic mechanical behavior analysis of the ballistite material and so on

    在前面所提出的理論基礎之上，本文對該方法在實際工程中的應用做出了大量的工作。本文利用時間序列法實現了汽車前燈配光鏡的熱變形檢測、壓電陶瓷片的超低頻振動分析以及火箭固體燃料的動態力學特性研究。
  2. The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method, dual mixer time difference method and frequency difference multiplying method are supported on the platform. the fundamentals of each method are studied. the quantization error is analysed and the illustration is given for each method

    該平臺支持直接頻率和時差法兩種較低精度的測量方法以及雙混頻時差法、差拍頻率法和頻差倍增法高精度的簡接測量方法，本文研究了各種測量方法的原理，對各種測量方法的量化誤差作了分析，並給出具體的實例。
  3. Test method for low frequency and spurious disturbances

    低頻與寄生干擾的試驗方法
  4. Application of very low frequency electromagnetism method in indirectly ore exploration in the chaihulanzi gold deposit

    甚低頻電磁法在柴胡欄子金礦間接找礦中的應用
  5. Investigation on low - frequency measurement method of sound insulation for underwater acoustical material

    水聲材料低頻隔聲測試研究
  6. This paper studies the mechanism generated from flow - noise in seawater pipeline, introduces controlling method of flow - noise, analyzes sound field characteristics of flow - noise in seawater pipeline system and the merits and demerits of measuring the flow - noise methods in and out of the pipeline. in our experiment, a test measuring device of seawater muffler is used in a measuring chamberlet to verify that a method of reverberation chamberlet is difficult to exactly measure the low frequency flow - noise in pipeline. at the same time the insertion lose of water muffler in the low frequency was measured by the measuring chamberlet method

    本文分析了海水管路系統內流噪聲的產生機理，介紹了流噪聲的控制方法；分析了海水管路系統中流噪聲的聲場特性以及流噪聲管內、管外測量方法的優缺點；通過海水消聲器試驗測量臺架，利用測量小室驗證了混響箱法難以準確測量海水管路系統中的低頻流噪聲；用測量小室對水消聲器在低頻段的插入損失進行了測量。
  7. Digital simulations reveal many valuable characteristics of the power system low frequency oscillation. the limit of conventional analysis and the appearance of new technique such as wams together with the advance of the nonlinear theory, require a new method for oscillation research of power grid, which can combine small and large disturbances analysis effectively

    論文指出，由於傳統小信號穩定分析方法的局限性，及動態監測設備和非線性理論等新技術與理論的迅速發展，有必要研究新的振蕩分析方法，以更加有效地揭示互聯系統小擾動、大擾動后的振蕩機理，並研究相應的控制策略。
  8. Compared with classic wavelet technique, the proposed method can adjust not only the low frequency components of earthquake wave, but also the high frequency components

    和傳統的小波分析相比，該方法不僅對地震波低頻分量進行精確調整，還可對其高頻成分實現類似的調整。
  9. Two kinds of method to divide the photo into blocks are presented in the dissertation, then the techniques of appending zero, dct transform and changing low frequency coefficents are utilized to hide information ( in fact, information is masked in dc components ). so information is hided in the low frequency domain of a photo. furthermore, good quantity evaluation is got after compared with original photos

    本文通過對原圖像分別使用兩種分塊方法進行分塊，然後通過補零， dct變換，改變低頻系數來進行信息隱藏（實際上是在直流分量上隱藏信息） ，實現了在低頻域進行信息隱藏的目的，且使得隱藏后的圖像與原圖像相比具有較好的質量評價。
  10. After filtering out the part of low frequency from the data coming from condition monitor and calculating the comprehensive magnitude of spectrum around the clap - frequency, the alarm limit of clap - frequency vibration mal - functions are determined by using statistical method

    從信號中濾除高頻成分，求得樣本拍頻附近譜線的綜合幅值，用數理統計的方法確定了拍振故障報警限。
  11. A new method for realization of multi - channel data acquisition on windows flat form is brought forward in allusion to the feature of hyper - low frequency with water pressure pulsation in hydroelectric sets. and various anti - disturbance solutions are adopted in connection with the detection environment. the device proved to be able to has been meet predetermined requirement by its engineering application

    針對水力發電機組水壓脈動超低頻特性，開發出一種在windows平臺上實時多通道數據採集系統，並結合測試現場環境，提出了抗干擾的各種措施.經實際運用，達到了預定要求
  12. The method which good merits of high - fitting - accuracy and simplicity, can be used to subdivide the equal - stride - angle and to improve torque - frequency characteristics at low frequency

    該演算法簡單，擬合準確度高，可實現步距角的等步距細分，能有效地改善低頻起動矩頻特性。
  13. And classic pid control method and numerical pid control method have been introduced in the paper. the paper adopt stabilization border method to set the pid parameters and simulates the control system which is based on matlab / simulink. simulation results indicate that pid control ’ s simulation results have a good effect in low - frequency stage, but it is not perfect in mid - frequency and high - frequency stage

    採用穩定邊界法實現對pid參數的整定，並基於matlab / simulink對控制系統進行了模擬，模擬結果表明:低頻段pid控制正弦跟蹤曲線取得了良好的效果，而在中頻和高頻段時的跟蹤效果不是很好， pid控制的階躍響應超調量較大， pid控制三角波曲線的高頻性能也不理想。
  14. The study proved that fem is an effective and accurate method for the laminated composites " research and designation in middle and low frequency scope

    研究結果表明對層合復合降噪材料在中低頻范圍內的應用，有限元數值方法是一個有效而準確的研究和設計途徑。
  15. This thesis focuses on analysis and control of low - frequency electromechanical oscillations in power systems based on prony ' s method. the main work is as follows : 1

    本文以基於prony法的電力系統低頻振蕩分析與控制為研究內容，主要做了以下工作： 1
  16. Boundary condition method just amend a little for intrinsic fem program, and can obtain low frequency sound transfer function of receiver based on existed fem mesh. the big sound source is divided into some elements by lumped sound source method, in which, the biggest size of element is smaller than the smallest wavelength of sound wave

    邊界條件法僅對原有的有限元程序作較小修改，並在已有的有限摘要元網格劃分上，能夠求解出接收點處的低頻聲傳遞函數;集中聲源法將大尺度聲源劃分為若干板塊，其最大幾何尺寸小於最小聲波波長。
  17. By using this method, the impact on depressing the partial vibration and the radiation of the low frequency noise of the structure underwater is efficacious

    採用增大局部結構剛度的方法，對于降低水下結構的局部振動與低頻噪聲輻射效果顯著。
  18. In order of the process of data processing arrives national standard, the article described the technology of data sign processing. compared and analyzed different methods of filter designing, chosen the method of fir with window and designed the low frequency data filter. used the software of matlab to simulate the frequency performance, which is combined with some experiments

    為了使試驗數據處理過程符合國家法規要求，本文對數字信號處理技術進行了探討，對不同的數字濾波器設計方法進行了對比分析，擇優採用fir加窗技術開發出了滿足要求的低通數字濾波器，並結合試驗情況用matlab對本濾波器幅頻特性進行了模擬計算分析。
  19. For few domestic and international studies of the radio propagation in the overburden of the earth ' s crust, this paper theoretically stresses the propagation problem of low frequency radio wave, including slf wave and vlf wave, in the medium and briefly introduces the theory of scale model testing method

    針對國內外有關電波在地殼覆蓋層中傳播研究工作的空白，本文主要從理論上討論低頻（包括特低頻和甚低頻）無線電波在該種介質中的傳播問題，並簡要介紹縮比模型測量理論。
  20. Furthermore, there are complex structures such as the engine fans at the end of the inlets. it ' s hard to deal with such problems if we use high frequency method or low frequency numerical value method only

    對于厘米波段雷達而言，進氣道屬于電大尺寸目標，其終端有渦輪葉片之類的復雜結構，單用高頻近似法或低頻數值法都難以解決。
分享友人
分享到 Line

分享到臉書