fundamental frequency 中文意思是什麼

fundamental frequency 解釋
【物理學】基頻。

  • fundamental : adj 1 基礎的，基本的，根本的，重要的；原始的，主要的。2 【物理學】基頻的，基諧波的；【音樂】基音...
  • 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。
  1. The frequency associated with the first mode is sometimes called the fundamental frequency.

    和第一振模相聯系的頻率有時叫做基頻。
  2. Definitions of physical quantities for fundamental frequency and time metrology - random instabilities

    基本頻率和時間計量學用物理量定義.隨機不穩定性
  3. Standard definitions of physical quantities for fundamental frequency and time metrology - random instabilities

    基頻和時間計量學用物理量標準定義.隨機不穩定性
  4. Because the fundamental frequency of power system is not invariable, it needs to be tracked and measured

    由於電網的基波頻率並非始終不變的，因此需要對實際的電網頻率進行跟蹤檢測。
  5. Investigating the relationship between the resistive component of the fundamental frequency current and that of the 3rd harmonic current by experimentation with real movs

    通過試驗研究了moa泄漏電流中基波阻性電流和三次諧波阻性電流之間的關系。
  6. Along with the extensive use of power cable lines in power distribution system, the probability of fundamental frequency resonance has greatly increased

    隨著配電網中電纜線路的大量使用，出現基波電流諧振的可能性大大增加，威脅系統的正常運行。
  7. At the same time according to the low recognition rate in speech recognition system, the author used the method of fundamental frequency analysis to build male / female recognition model respectively

    同時針對語音識別系統中識別率不高的問題，採用基音頻率分析的方法分別建造男女聲識別模型。
  8. In the thesis, a signal processing scheme of polarization - insensitive fiber optic michelson interferometric magnetic sensor is described : making the interferometer work near the quadrature with closed loop controlling working point method, the fundamental frequency component of the magnetic field sensing signals can be detected to measure the input direct current ( dc ) magnetic field by phase sensitive demodulation

    本文主要介紹了偏振無關光纖michelson干涉型微弱磁場傳感器信號處理的方案:通過閉環控制工作點演算法使干涉儀工作在正交工作點處，再利用相敏檢波演算法提取傳感器輸出信號的基頻分量，以測量直流磁場的大小。
  9. At present, the infrared transmission spectroscopy is the best technique for determining whether jadeite is polymer - impregnated or not, and the infrared reflectance spectroscopy is a nondestructive and rapid determination method that provides mainly the fundamental frequency vibration spectra data of minerals and shows new application potentials in gemological research, especially in the identification of gem species

    摘要紅外透過光譜技術是當前鑒別翡翠是否有聚合物充填的最好方法，而紅外反射光譜技術是一種快速、無損傷的測試方法，主要提供礦物的基頻振動光譜信息，在寶石學研究方面特別是鑒定寶石種屬方面顯示出新的應用可能性。
  10. Second, through employing the 3 - d finite element model and the dual objective function inversion method developed in this paper, and taking the measured fundamental frequency of system and the structure response to a harmonic excitation at the top of structure in field as the reversion objectives, the linear material parameter inversion is performed in ansys by using ansys parameter design language ( apdl )

    第二，採用三維實體有限元模型和本文提出的雙目標函數反演方法，把現場測試得到的系統基頻和頂部激振下實測的結構動力響應作為反演目標，利用ansys參數設計語言（ apdl ） ，在ansys軟體中實現了系統材料線性參數的反演。
  11. On the basis of theoretical analysis and numerical calculations using matlab language combined with a real instance, it is indicated that the improper electrical parameter coordination caused by the abundance of power cable lines result in fundamental frequency current resonance, in addition, the countermeasures based on svc to solve the problem are put forward

    文中結合某變電站異常運行狀態實例，在理論分析和matlab語言數值計算的基礎上，指出由於電纜的大量使用導致了該系統參數配合不當，從而誘發了基波電流諧振，並提出裝設靜態補償器以防範該類諧振。
  12. The classic approaches for fundamental frequencies smoothing, such as linear smoothing, median smoothing and linear interpolation, can not work well in the case of that fundamental frequency is not detected correctly and several continulus frames

    傳統基音的平滑方法：線性平滑、中值平滑和一般的線性插值方法都不能很好地處理連續的基音頻率有隨機錯誤點的情況。
  13. This way has been improved in this paper. whole - cycle fourier differential algorithm is adopted in record start - up to satisfy the real - time requirement. the least squares method is applied to extract the fundamental frequency component in location which has low computing speed but high precision

    故障錄波啟動採用全波傅立葉差分演算法，以滿足啟動實時性要求，測距所需基波的提取採用最小二乘法，適應其精度要求高而實時性無要求的特點。
  14. The cable sag and bending stiffness effects are studied on the higher natural frequencies of cable vibration. it is found that the differences of the higher adjacent frequencies go to the fundamental frequency of the taut string theory even though the cable sag or bending stiffness is included. this unique characteristic of cable vibration is used to determine the cable tension with the well - known taut string theory

    2 .考慮垂度和抗彎剛度對高階自振頻率的影響，探討了索相鄰頻率之差，發現索的高階頻差就是弦振動理論的基頻，利用這一特性，分析了頻差法測索力的精度和適用范圍。
  15. Under these assumptions, three kinds of excitations, namely, harmonic force with frequency equal to the structural fundamental frequency, harmonic force with frequency equal to half of the structural fundamental frequency and pulse force are inputted to the undamaged and damaged structures. then under the same excitation, the undamaged structural displacement responses, velocity responses, acceleration responses, jerk responses and responses of integrated displacement are compared with that of the damaged ones

    在此假定基礎上，分別將激勵頻率等於結構基頻的簡諧形激勵、激勵頻率等於結構基頻之半的簡諧形激勵和錘擊激勵輸入結構，而後比較了損傷前後結構在相同激勵下的位移響應、速度響應、加速度響應、加加速度響應和位移積分響應。
  16. A method of pitch mark determination for a speech, includes : acquiring a fundamental frequency point and fundamental frequency passband signals by using an adaptable filter ; detecting a number of passing zero positions of the fundamental frequency passband signals ; and generating at least a set of pitch marks from a number of passing zero positions

    一種決定語音音高標記的方法，系藉以找出一語音之一組音高標記，此決定語音音高標記的方法系利用一可適性濾波器取得一基頻點與一基頻帶通訊號；求取基頻帶通訊號之復數個過零點位置；然後經由復數個過零點位置產生至少一組音高標記。
  17. Three kinds of excitations, namely, harmonic force with frequency equal to the structural fundamental frequency, harmonic force with frequency equal to half of the structural fundamental frequency and pulse force are applied to such four kinds of models. the displacement responses of the four kinds of models are calculated using sap2000 and the integrations of displacement responses are obtained by numerical calculations

    將三種激勵形式:激勵頻率等於結構基頻的簡諧形激勵、激勵頻率等於結構基頻之半的簡諧形激勵和錘擊激勵分別施加在這四種模型上，通過計算得到四種模型的位移響應，進而得到位移積分響應。
  18. Diode switches or voltage controlled varactors implement dual - band resonators such that they can offer low impedance at the second harmonic of each frequency band, while, in some cases, presenting high impedance at the fundamental frequency as an rf choke circuit

    利用二極體開關或電壓控制變容器實施雙頻共振器以提供在雙頻操作中每一個頻段之二階諧波的低阻抗，同時在一些實施例里也提供主頻段的高阻抗、兼具有射頻阻塞電路作用。
  19. Breaking off at wuwei on the hai - jin liens, after " ti " mode joined into wuwei 330kv transformer substation, it may bring some problems, such as fundamental frequency excessive voltage, resonance excessive vohage, stability, undercurrent, reactive power compensation, etc. these problem be analyzed. it provides the schemes of design and build wuwei transformer substation and reform the transmission line of hai - jin - jia

    在海金線武威開斷， 「 」入武威330kv變電站后可能帶來的如：工頻過電壓、諧振過電壓、穩定水平、潛供電流、無功補償等問題進行分析，對武威變電站的設計、建設及海金嘉線路改進提供方案。
  20. The main work of this thesis includes : 1. using energy theory, the cable sag and bending stiffness effects are investigated on the determination of cable tension forces through cable ' s fundamental frequency. based on the curve fitting, the practical formulas are proposed where the cable tension can be easily estimated using measured fundamental frequency

    本文的主要工作包括： 1 .考慮拉索的垂度和抗彎剛度對基頻的影響，用能量的方法，並輔以曲線擬合，提出了由基頻計算索力的實用公式，公式與理論解的誤差在以內，並對公式的適用范圍進行了討論。
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