dominant frequency 中文意思是什麼

dominant frequency 解釋
優勢頻率;主頻率
  • dominant : adj 1 支配的,統治的;有權威的。2 最有力的,占優勢的;主要的;突出的,超群出眾的。3 居高臨下的,...
  • 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. As air conditioned room is nonlinear and has dominant time - delay, the feasibility of using fuzzy logic controller in variable frequency air conditioner is discussed based on the using of conventional pi controller, both the pi controller and the fuzzy logic controller are studied by simulation

    另外,針對空調房間具有非線性、大時滯的特點,在採用常規的pi控制的基礎上,探討了模糊控制及其改進演算法在變頻空調控制中應用的可行性,並分別進行了模擬分析研究。
  2. The year of 2003 is in the declining phase of cyler 23 and the frequency of the solar - eruption is low, so the recurrent geomagnetic strom is dominant in all the geomagnetic activities

    由於2003年處于太陽活動下降年,太陽爆發活動頻次減小,地磁活動主要以重現型地磁暴佔主導。
  3. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽水電站雙排機組振動的現場試驗研究,並且針對傳統頻譜分析方法傅立葉變換( fft )對于非平穩信號已力不從心這一缺陷,利用小波分析方法在時域和頻域上同時具有良好的局部化性質,通過對開停機這一典型非平穩過程信號進行小波及小波包分析,將其分解到不同頻帶內,獲取微弱信息和提取優勢頻率,並對其作振源分析,得出開停機初始時刻因水流不穩均出現強烈的振動現象,且低頻段信號能量最大,開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。
  4. The clues and techniques to improve the resolution of data processing are 1 ) removing the affection of near surface factors on data acquisition, including static correction and noise eliminating technique etc, 2 ) broadening the frequency band of pre - stack seismic data, including amplitude compensation and pre - stack deconvolution etc, 3 ) improving s / n ratio of high frequency and weak reflection signals through multiple coverage with high precision velocity analysis, residual static correction and high - order nmo, raising " dead line of high frequency reflection ", and 4 ) identifying post stack effective reflection frequency band, enhancing dominant frequency and so on

    主要包括:消除近地表因素對資料採集的影響,包括靜校正和噪音壓制技術等;疊前拓寬地震資料領帶,包括振幅補償和疊前反褶積技術等;藉助高精度速度分析、剩餘靜校正和高次項nmo技術,通過多次覆蓋疊加,消除資料中隨機噪聲干擾、提高資料信噪比,尤其是高頻端反射信息的信噪比,改善高頻反射和弱反射信號信噪比,提高「高頻反射死亡線」 ;疊後有限反射頗帶識別、抬高優勢頻率等。
  5. Using the cluster analysis method and studying 16 sampling plots of shrub grassland where bothriochloa ischaemum is the dominant species, and the plots ' grass frequency, grass coverage, density, height, and biomass, we graded the plots into five grazing stages : light, proper, moderate, serious, and extreme

    摘要在對放牧利用下的白羊草灌叢草地頻度、蓋度、密度、高度、生物量等數量特徵調查基礎上,運用系統聚類分析方法,可戒分為輕放、適牧、中牧、重牧和極牧五個階段。
  6. It is found that the dominant microwave frequency is approximately unchanged at around 3. 5ghz or at around 4. 8ghz with the cathode - anode gap greater or less than 1. 3cm in our model, respectively

    當陰陽極間距在某一范圍內變化時,微波頻率基本不變,但隨著陰陽極間距變化到另一范圍,微波頻率會發生跳變。
  7. Flow separation produces pressure fluctuations of large amplitudes, possibly with the dominant frequencies differ from up - stream blade wake passing frequency and its harmonics

    尾緣氣流分離產生的壓力波動頻譜中含有上游葉片尾跡頻率及其倍頻的分量,但其頻譜可能比較復雜,並非單一地受上游葉片尾跡影響。
  8. As a result of the analysis, the dominant frequency was significantly affected by the pear firmness and mass, while the excitation point, detected point, excitation intensity and impacting material did not

    結果表明,不同測點、材料、激勵點和速度對響應主頻率沒有較大影響,而質量、堅實度的影響則顯著。
  9. In order to calibrate properly the thin reservoir of hd4 oilfield with acoustic velocity, based on the theory of well - to - seismic calibration, the influence of the dominant frequency, kind and phase of the wavelet, and acoustic velocity on the synthetic traces was analyzed, moreover, the differences between interval velocity from stacking velocity and acoustic velocity were discussed

    為了利用聲波速度對薄儲層進行有效的井震標定,從井震標定的原理出發,以哈得四油田的井震標定為例,分析了標定過程中子波的主頻、類型和相位及聲波速度對合成地震道的影響,同時分析了聲波速度與疊加速度轉換的層速度之間的差別。
  10. The proposed approach can effectively monitor the changing trends of the dominant frequency and energy as well as the process variable contributions, and is feasible for non - stationary process monitoring, fault detection and localization

    該方法能有效地監控過程系統中主導成分的頻率、能量的變化趨勢以及過程變量的貢獻度,適合於非穩態過程監控以及故障檢測與定位。
  11. The distributions of the values of fluctuating pressure conform to the law of normal distribution ; and the dominant frequency is low frequency

    脈動壓強幅值分佈符合正態分佈規律,優勢頻率為低頻。
  12. So a new method is proposed that combines the traditional transfer function and coherence function analysis with the statistics of frequencies to obtain the dominant frequencies, which can reflect how the noise sources influence the bus interior noise level in frequency domain, and which will provide reliable references to make up plans in reducing the bus interior noise

    對此提出了在傳統的傳遞函數和相干函數分析的基礎上結合頻率統計,選出優勢頻率的方法來考察噪聲源對車內噪聲的影響,為制定客車車內噪聲治理方案提供了可靠的依據。
  13. Dynamic power is dominant component of the average power dissipation in cmos circuits. and the value of dynamic power is determined by node capacitance, supply voltage, clock frequency and switching activity of cmos circuits. so most low power designs are achieved by reducing one or more those above parameters

    由於cmos電路的功耗與cmos電路的負載電容,電壓,時鐘頻率及開關活動性有關,因此在低功耗cmos觸發器設計過程中,許多低功耗設計技術都可以歸結到通過減小上面的參數來達到低功耗的目的。
  14. Johnson has been a huge talent and a remarkable competitor, but his days as the dominant big unit are, if not over, certainly going to occur with less frequency

    巨怪是一位有競爭力的選手,但是那是他被稱為巨怪的那些日子中,現在被這樣的尊稱頻率已經減少了。
  15. The inversion ' s resolution is restricted by seismic sampling rate, dominant frequency and bandwidth used a practical model to prove, and two difference concepts are put forward between seismic resolution and stratigraphic resolution

    用實際模型論證反演的解析度與地震資料解析度的關系,認為反演的解析度受地震資料的采樣率、主頻和有效頻帶的限制,並提出地震分辨和地層分辨兩個不同的概念。
  16. In future information society, space optical communication will replace radio frequency ( rf ) & microwave communication as dominant position in field of wireless communication because of it ' s unparalleled advantage

    在未來的信息社會中,空間光通信技術因其無可比擬的優勢,將取代目前無線電( radiofrequency - rf )和微波通信在無線通信領域中的主導地位。
  17. On the rotor blade pressure surface, the dominant frequencies of unsteady surface pressure are the up - stream blade wake passing frequency and its harmonics, and the amplitudes of pressure fluctuations decrease from leading edge to trailing edge

    轉子葉片吸力面非定常壓力受葉片附面層和上游葉片尾跡共同影響,其主導頻率為上游葉片尾跡頻率及其倍頻,但是在吸力面前部氣流加速區壓力波動幅度沿流向增大,而在吸力面後部氣流減速區壓力波動幅度沿流向減小。
  18. The results show that the dominant frequency bands of blast vibration signals tend to be low, and its frequency band becomes wider

    結果表明,爆破震動信號在傳播過程中,其主振頻帶有往低頻發展的趨勢,且寬度增加。
  19. The dominant frequency increased as increase of the pear firmness, and decreased as increase of the pear mass

    經分析,主響應頻率隨堅實度的增加而變大、隨質量的增加而變小,主響應頻率與質量、堅實度有較好的相關性。
  20. The characteristics of calls are closely correlated to the ecology of bats, for example, the dominant frequency influences the body size of bats " prey, the detecting range of bats ; the structure of calls decides bats " ability to detect prey in the complicated environment. therefore, the research on factors, which influence the structure and characteristics of ultrasound and on the mechanism by which bats detect and orient the prey will promote the understanding of the ecological behavior of bats

    由於聲波的特徵和蝙蝠的生態行為有著密切的聯系,如聲波的主頻率影響蝙蝠可探測到的獵物的大小、獵物能被探測到的距離及獵物探測和躲避蝙蝠的能力,聲波的結構則影響蝙蝠在干擾環境中探測獵物的能力,因此研究影響蝙蝠聲波結構和特徵的因素、探討蝙蝠聲波探測和定位的機制,可以更加深入地了解蝙蝠的生態行為。
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