次聲頻 的英文怎麼說

中文拼音 [cìshēngbīn]
次聲頻 英文
infrasonic frequency
  • 次 : Ⅰ名詞1 （次序; 等第） order; sequence 2 [書面語] （出外遠行時停留的處所） stopping place on a jou...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  1. The study used 10 - second long silent video clip extracts of debates from 58 gubernatorial elections between 1988 and 2002. some 264 subjects participated in the study

    研究人員將1988年至2002年間共58次州長競選的辯論錄像製作成10秒鐘的消聲視頻剪輯，並邀請264名調查對象參加了實驗。
  2. Hi this thesis, the technique of detector array is used to obtain the location of anomalous infrasound, it is the basic of the study of prediction of earthquake. to derive useful information by using spectrum analysis on infrasonic signal. then combing with other methods a forecast could be made

    本課題主要是利用數字技術，採用用傳感器陣列計算異常次聲波波源的方位，這是今後預測震中位置研究的前提；並對次聲信號進行頻譜分析，提取有用的關于臨震次聲方面的信息，再結合其他的預報方法，作出準確的地震預報。
  3. Orotund frequency of of tone of high and low, main with the each vibration of number of times relevant, is a person s ear to high and low and subjective evaluation dimensions of tone. the tone is low to mean to vibrate the frequency low, the voice seem to be deep and low ; the tone is high, and mean to vibrate the frequency high, voice the stab

    音調聲音頻率的高低，主要與音源每秒振動的次數有關，是人耳對音調高低的主觀評價尺度。音調低表示振動頻率低，聲音顯得低沉音調高，表示振動頻率高，聲音就尖刺。
  4. The modulation of sound properties over a wide range of time scales is one of the most obvious characters of oscine passerine ' s vocal, whose song contains many different kinds of syllables that consist of many more multiple song phrases. in oscine passerine, ipsilateral projections of ra to nxiits innervates the ipsilateral syringeal muscles exactly, and thus they have strong ability of vocal control with variable tones, high frequency and higher lever of quality. as a result, the songs sound well

    鳴禽鳴囀的最大特點之一便是其單次鳴唱時間長，鳴唱所包含的音節數量和音節種類繁多，因而由這些音節所組成的句型結構也是復雜多樣富於變化，且由於nxiits嚴格的側別控制（每一側核團只支配同側鳴肌） ，使其具有更強的控聲能力，其鳴聲音調變化幅度大，頻率高，品質因數大，音色好，因而其鳴聲也悅耳動聽。
  5. Atmospheric acoustics is the study of propagation of sound waves in the atmosphere. listed in it is the study of infra - sonics, which focuses on inaudible, low - frequency sounds

    研究聲音在大氣中傳播特性的科學稱為大氣聲學，當中的次聲學便是專注於人耳無法聽到的低頻聲音。
  6. This thesis was divided into eight chapters, and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly. based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter, paraxial diffraction of stokes, langevin noise sources, reflection at the faces and the edges of crystals, gain coefficient, beam aperture, pulse width and fluence of 3, the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up

    全文共分八章，取得的主要成果及創新點如下： （ 1 ）首次建立了諧波轉換晶體的tsrs物理模型本文根據量子力學原理，在考慮如下物理過程和參量的基礎上：光與物質的雙光子相互作用； stokes光的傍軸衍射； langevin （郎茲萬）噪聲源；晶體表面反射和端面反射；增益系數、光束口徑、脈寬和三倍頻光能量密度，推導出高通量激光在kdp和kd ~ * p諧波轉換晶體中的tsrs物理模型和空間上的近軸算符maxwell - bloch - langevin方程組。
  7. The paper produces noise reduction measurements and major frequency coverage that is 200 ~ 2khz to be used in selection of acoustical absorption and sound insulation materials. the measurement produces self - contained data to design lower noise railway vehicles in the future

    本次測試的車輛車內噪聲主頻帶為20 2khz ，可依據此頻段進行新型車的設計和車體內部隔聲吸聲材料的選擇。
  8. The major job is manufactured a transmitter, which has three upmixer channels. its function is to up convert the signals from c - band to ka - band. the input local oscillator is provided by a low frequency crystal oscillator which has a good performance of phase noise, through 512 times multiply to ka band. this sysetem is used in the laboratory as transmitter source of the fuze, for the multidimensional objects in practise, which lead to the complexity of the reflect signal, so the amplitude, frequency and the phase of the transmit signals both have a key role in dealing with the reflection signals. therefore, this system requires for both the coherence of the single channel ’ s amplitude, phase and multi channels

    本文的主要工作是應用戶要求製作一具有三發射通道的上變頻系統，可以將c波段的微波信號上變頻到ka波段的毫米波信號。系統的本振輸入基頻由一相位噪聲非常好的低頻率晶振提供，經過512次的倍頻放大至ka波段。本系統作為實驗室中引信的發射源，由於目標反射信號具有時變的多維性，反射信號變得極為復雜，在信號處理時，不僅信號幅值、頻率有決定意義而且相位關系也很有決定意義。
  9. Nian green wubi a significant benefit is the support gbk chinese characters, like the cantonese, the company - and shi, what, ye, 1, 10, de, xi, ge, li, expense and chanting, luo, shan, men, gua full, and so are the characters commonly used included ; second, avoid weight code in the premise, canada to a lot of terms, such as netizen, websites, programs, rookie, sound card, pupa, acer, cords easy, tencent, the site, see the, nokia, mobile phones, guard, zhu rongji, vladimir putin, wang jie, li yu, liu yong, north island, leza, fen, chechnya, east timor, chao, the euro, good, so on ; for some the word order in accordance with commonly used frequency also made corresponding adjustments, such as " problem " to " always " is one example, while some " dacron, " and the problems left over from history are returned to the history

    念青五筆一個顯著的好處是支持gbk漢字，像粵語中的? 、 ? 、 ? 、乜、 ? 、 ? 、 ? 、 ? 、 ? 、 ? 、 ? 、念、 ? 、 ? 、 ? 、 ?等常用字都有悉數收錄；其次，在避免重碼的前提下，加入了大量詞目，諸如網友、網站、程式、菜鳥、聲卡、蒲吧、宏基、索易、騰訊、站點、見工、諾基亞、手機、后衛、朱?基、普京、王傑、李煜、柳永、北島、哪吒、粉腸、車臣、東帝汶、炒匯、歐元、利好等，不一而足；對於一些詞序的排列也依據常用頻率作出了相應調整，如「問題」之於「總是」即是一例，而一些「的確良」之類的歷史遺留問題則歸還給歷史了。
  10. In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector

    在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。
  11. A data acquisition and analysis system of insect acoustic signal ( daasias ) with friendly interface, simple operation and multifunction was developed. it could sample and analyze insect acoustic signals in real time. by daasias both observing insect behavior and analyzing signal could be conducted at the same time

    以往昆蟲鳴聲信號是記錄在磁帶上，分析時通過回放磁帶的錄音，在示波器、頻譜儀或聲譜儀等聲學儀器上進行信號分析，結果磁帶的多次回放常會引起信號的失真，並難以對信號作進一步的編輯處理；分析儀器不但價格昂貴、體積較大，而且很難實現昆蟲聲行為觀察與信號分析同步，更不適合野外工作。
  12. 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。
  13. Then a low pass filter is designed to filter high - frequency noise in data. and smooth data again by means of central interpolation algorithm ; helicopter model with multi input single output are identified respectively in ls method and ml method

    （ 2 ）剔除並補正了飛行實驗數據中的野值；設計了一個低通濾波器來濾除數據中的高頻噪聲；用中心插值演算法對數據二次平滑。
  14. This firmly establishes the nature of the oscillations as low acoustic eigenmodes of the subphotospheric layers.

    這就確鑿地證實了振蕩的本質是次光球層的低頻聲波本徵模式。
  15. Based on the results of the theory analysis and computer simulation of suspended stripline low pass filter, band pass filter, the transition from waveguide to finline and the transition from waveguide to suspended stripline, the structure design and manufacture were made. the measured results match the requirement. different from the traditional mixers used in the domestic communications satellites, the sub - harmonic balance mixer type was used in the ka - band mixer design

    在ka頻段混頻器的研究過程中，通過對衛星和飛船所用到的混頻器進行研究，在對ka波段的傳統射頻前端電路的分析基礎上，提出改變以往星上傳統的基波混頻方案，採取了次諧波混頻方案，降低了本振頻率，簡化了本振鏈路，使噪聲特性、可靠性獲得改善。
  16. Secondly, ground on the duct noise control, the delayed - lms algorithm, which is actulized easily, is brought forward, then the simulation on pc is achieved. it is shown from the computer simulation that for the single frequency noise, there will be a good effect when choosing the suitable parameters ; but for the narrowband noise, the effect will become worse with increasement of the bandwidth. this result is helpful to analyze the parameters influencing anc

    結果表明： （ 1 ）隨著濾波器長度的增大，系統收斂速度變快； （ 2 ）隨著值的增大，系統的收斂速度增大，但是當值超過某一范圍時會引起系統的發散； （ 3 ）次級通路的延遲數與初級噪聲頻率有關； （ 4 ）對于窄帶信號， dlms演算法可以取得一定的降噪量，但是隨著窄帶信號帶寬的增大，降噪效果明顯變差。
  17. Variance analysis shows that sound intensity affects df mostly, following with rhythm and frequency

    方差分析結果表明聲強對駕駛疲勞影響較大，節奏次之，頻率最小。
  18. Avalanche diode high order frequency multipliers are able to transform microwave signals to millimeter wave signals in single stage by fierce nonlinear inductance effect in avalanche phenomena. it has obvious advantages in high order frequency multiply with high efficiency and is a good approach to provide high quality millimeter wave source

    雪崩高次倍頻器能夠將微波信號單級高次倍頻至毫米波頻段，它倍頻效率高、輸出功率較大，具有高頻率穩定度和低相位噪聲的特點，能夠為毫米波應用提供優質的毫米波信號源。
  19. The next highest, alpha waves, are associated with daydreaming and visualization or " sensualization ", as the author puts it and with relaxed, detached awareness, a receptive state of mind. they also, very importantly, serve as a bridge between the conscious and unconscious minds or between the beta mind state and those states associated with the lower frequency brain waves

    次高頻率的腦電波，波：與白日夢和視覺體驗作者又稱之為聲色的體驗有關，是一種放鬆不執著高接受度的心靈狀態這種腦波非常重要的是聯結意識與無意識狀態，也是介於波意識狀態與低頻率腦波意識狀態之間的橋梁。
  20. Rthk was the host broadcaster for the world trade organization 6th ministerial conference and a special wto channel was operated during the conference with the use of fm and dab technology to relay in - house meetings and events to the community. in the same month, a four - day outside broadcast at the hk brands and products expo was conducted

    香港電臺擔任世界貿易組織第六次部長級會議的東道主廣播機構會議期間特設立世貿會議頻道，採用超短波和數碼聲頻廣播技術向市民轉播世貿內務會議和各項盛事，並於同月為香港工展會進行四天外勤廣播。
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