振動次數 的英文怎麼說

中文拼音 [zhèndòngcìshǔ]
振動次數 英文
number of oscillations
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 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...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  • 次數 : number of times; frequency
  1. Abstract : considering the second nearest - neighbor interaction and cubic, quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration. it is shown that the kind of nonlinear chain exhibits envelope soliton, envelope kink and envelope antikink soliton. these results can also be used to explain the experimental phenomena that the kink amplitude of the self - localized structure is determined only by the intrinsic properties of its lattices

    文摘:同時考慮次近鄰諧振相互作用和三次方、四次方非諧相互作用，利用多重尺度結合準離散近似方法去計算晶格振動行為，發現一維非線性點陣中存在包絡孤子及正扭結型包絡孤子、反扭結型包絡孤子，解釋了自局域結構的幅度只取決于點陣中的固有參數的實驗現象
  2. We acquired the system ' s dynamic response when the satellite attitude was adjusted and the mode of the antenna. then modal analysis and dynamic analysis have been done to the satellite - antenna system by using the finite element analysis ( fea ) software of ansys. through the analysis we got the system ' s connatural characteristic, the amplitude - frequency characteristic of harmonic response, the power spectrum density of random vibration response, the maximal amplitude and resuming time of impact response

    其次藉助ansys有限元分析軟體，對系統進行了模態分析和動力學響應分析，獲得了不同天線結構參數下的衛星?天線系統的固有特性，簡諧響應的幅頻特性，隨機振動響應的功率譜密度，以及沖擊響應的最大幅值和恢復時間等。
  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. Then the article analyses the effecting elements about the economic result of blasting and puts forward some improving measures, and summarizes optimizing model on economic result of blasting both internal and overseas bearing upon. the theory is based on the blasting cost model, which proposed by dr. zhong hanrong. combining with the specialties of water and electricity engineering, starting off through blasting result, it emphasizing considers drilling cost, deep hole bench blasting cost, reblasting cost, and the cost of bottom fleet hole blasting that in mixed loading emulsion explosive blasting

    本文在加拿大鐘漢榮博士提出的爆破成本模型基礎上，結合水電工程的特點，從爆破效果出發，著重考慮了應用混裝乳化炸藥爆破的鉆孔成本、深孔梯段爆破成本、二次爆破成本和爆破后根底淺孔爆破成本，以塊度、振動、安全為約束條件，以這四項成本最小為目標函數，廣泛收集各種爆破經濟技術條件，建立了爆破優化經濟數學模型。
  5. In the light of the problems of the air balance system of model lcj1250 chain drive pumping unit, it is proposed to change the air balance with counterweight balance, and three criteria for the modification is put forward : ( 1 ) ensuring the reliability of the unit with smooth operation, low noise and long life ; ( 2 ) cutting down the production cost and using less component parts as possible ; ( 3 ) carrying out modification without such main technical parameters as stroke, pumping speed and maximum polished rod load

    針對lcj1250氣平衡式鏈條抽油機存在氣平衡故障率高和現場維修困難等問題，提出將氣平衡改造成工作可靠的重力平衡的方案，並確定了改造的三個原則：一是保證整機的可靠性，使抽油機運轉平穩，振動噪音小，壽命長；二是力求降低生產成本，減少零部件製造，盡可能選用原來的通用件，捨去平衡缸和空氣包等氣平衡附件，在原往返架主體上懸掛一個配重箱；三是力求不改變沖程、沖次及最大懸點載荷等主要技術參數。
  6. Abstract : in the light of the problems of the air balance system of model lcj1250 chain drive pumping unit, it is proposed to change the air balance with counterweight balance, and three criteria for the modification is put forward : ( 1 ) ensuring the reliability of the unit with smooth operation, low noise and long life ; ( 2 ) cutting down the production cost and using less component parts as possible ; ( 3 ) carrying out modification without such main technical parameters as stroke, pumping speed and maximum polished rod load

    文摘:針對lcj1250氣平衡式鏈條抽油機存在氣平衡故障率高和現場維修困難等問題，提出將氣平衡改造成工作可靠的重力平衡的方案，並確定了改造的三個原則：一是保證整機的可靠性，使抽油機運轉平穩，振動噪音小，壽命長；二是力求降低生產成本，減少零部件製造，盡可能選用原來的通用件，捨去平衡缸和空氣包等氣平衡附件，在原往返架主體上懸掛一個配重箱；三是力求不改變沖程、沖次及最大懸點載荷等主要技術參數。
  7. It adopts the twice sum right method to input the vibrations of head and buttock according to the national standard far a decubital human body, gathers data and carries out calculations, to realize a real time measurement

    它根據國家標準對臥姿人體承受頭部和臀部振動輸入的2次計權方法，採用多工的軟體設計，一邊採集數據，一邊進行運算，實現了測量結果的實時顯示。
  8. And vibration function make supplies viscidity and interior frictional force of particle reduce greatly, make the sport tempo of the particle of the supplies increase, has increased the number of times of colliding effectively, accelerate cement particle surface hyrate to speed that liquid phase spread, is it fully go on to mix and stir at micro competence to guarantee

    而振動作用使物料顆粒間的粘性和內摩擦力大大減小，使物料顆粒的運動速度增大，增加了有效碰撞次數，加快了水泥顆粒表面水化物向液相擴散的速度，從而保證了拌和在微觀水平上的充分進行。
  9. Under windows nt and labview development environment, using the linear fit module, exponential fit module > general polynomial fit module of labview to design a method for fitting the experiment data, the results of curve fitting indicate that the purpose of general polynomial fitting is better than the rest. separating the equivalent input impedance of magnetostrictive transducers without stimulate current from input impedance of it with stimulate loop based on the results of curve fitting, and determining the syntony frequency and electric simulation network parameters of magnetostrictive transducers by this input impedance. finally, with labview network functions, realizing magnetostrictive transducer electric simulation system based on web server and discussing a scheme for this system network by datasocket. the method of this paper can more accurately determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers than the testing method of syntony & anti - syntony. at the same time, discussing virtual instrument measurement system and how to realize magnetostrictive transducer electric simulation network system by labview network functions of network virtual instrument measurement development environment

    在windowsnt系統環境和labview虛擬儀器技術開發平臺下，首次利用labview中的直線擬合模塊、指數擬合模塊以及多項式擬合模塊，設計了一種對實驗所得數據進行曲線擬合的方法，對三種擬合方法進行了比較，曲線擬合結果表明，多項式擬合方法相對于其它兩種擬合方法效果更好；根據曲線擬合的結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時機械振動形成的等效輸入阻抗，並由此輸入阻抗確定了磁致伸縮換能器的諧振頻率及其電氣模擬網路參數；最後通過labview提供的網路功能，實現了基於web服務器的磁致伸縮換能器電氣模擬虛擬儀器測試系統，並探討了通過datasocket技術實現該系統網路化的方案。
  10. Based on the vibration test in yantan hydropower house, in this paper the author adopt les method which belong to three dimensions unsteady turbulent flow numerical analysis to simulate vibration resource characteristics of hydrogenerator set, a harmonic vibration model of powerhouse substructure is put forward to carry out firstly a precise modal analysis and dynamic response analysis for generator floor. the numerical calculation results agree well with the surveyed data in situ

    本文結合巖灘水電站廠房振動的試驗研究，採用非定常湍流數值分析的大渦模擬方法進行混流機組水力振動振源模擬；提出一種水電站廠房下部結構簡諧振動模型，首次進行了發電機層樓板結構的精確模態分析和水力激振荷載下的動力響應分析，各項計算結果與實測數據吻合良好。
  11. We build a close vibration compensation system which can successfully achieve the measurement of interference fringes movement and - vibration compensation. it puts forward pre - setting fill - in pulses method to implement phase shifting with the same pzt. with this new method, the interference fringe can be stabilized at any pre - setting phase position

    提出了填充脈沖數預設定的方法，可以將干涉條紋鎖定在任意設定的位相位置，實現了用pzt同時實現振動補償和移相測量；深入分析討論了pzt的延遲問題，創造性地提出了用多次逼近補償的辦法，給出了反饋補償的演算法，解決了補償過程中存在的系統不穩定和過補償的問題。
  12. The semi - active logic control algorithm was proposed, which includes six kinds of semi - active logic control method. they are the semi - active logic control method a, b and c for single mr damper, the semi - active logic control method d, e and f for multiple mr dampers. a series of numerial simulation and experimental investigations on the seismic responses of the tall building with a podium structure using single damper / multiple mr dampers were first carried out on the seismic simulator in the hong kong polytechnic university on 2002 - 2003

    針對帶裙房高層建築地震反應的鞭梢效應問題，以瞿偉廉教授和徐幼麟教授提出的「 er mr智能阻尼器耦聯的帶裙房高層建築結構地震反應的半主動控制」理論為起點，採取理論分析、計算機模擬和地震模擬振動臺試驗等研究手段，首次將基於泛布爾代數的邏輯控制方法引入結構控制領域，提出了半主動邏輯控制方法，包括單mr阻尼器半主動邏輯控制a 、 b 、 c和多mr阻尼器半主動邏輯控制d 、 e 、 f等六種。
  13. Vibrations per second

    每秒鐘振動次數
  14. Lower pitch indicates a note of lower frequency, following the conventional description of notes with a smaller number of vibrations per second as low, and with a greater number as high

    高音即為低振動率的音，根據通用描述，每秒振動次數較少為低，每秒振動的次數多為高。
  15. Consider to simplifying the process of calibrating dynamic error parameters of accelerometer and shortening the time of calibrating test, all dynamic error parameters are calibrated at one - time, based on the mathematic model of dynamic error of accelerometer and integrating the model and the testing theory of the three - axis turntable, meanwhile, the angle - vibration table is avoided

    摘要為了簡化加速度計動態誤差系數的標定過程，縮短標定試驗時間，在建立加速度計動態誤差數學模型的基礎上，結合三軸轉臺模型及測試原理，一次性標定出加速度計動態誤差系數，同時避免了角振動臺的使用。
  16. The wave length of infra - sound is quite long : typical infra - sound from the eye of a typhoon has a 4 to 8 second cycle 0. 25 to 0. 125 hz, meaning that its wavelength is a few kilo - metres long

    次聲波的波長很長，例如臺臺風眼所產生的次聲振動周期約秒0 . 250 . 125赫茲，波長便可達數公里。
  17. In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples

    第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。
  18. The main work includes : for the torsional vibrations of a rigid disk on saturated media, first, the dynamic governing equations are solved by the use of hankel transform and the general solutions in the hankel transform fields are formulated. then, considering the mixed boundary - value condition, the dual integral equations of the torsional vibrations of a rigid disk on saturated grounds are obtained, which can be reduced to the fredholm integral equations of the second kind and solved by numerical procedures. consequently, the dynamic compliance coefficient curves and the torsional angle amplitude curves versus the dimensionless frequency are presented and contrasted to that of the elastic one

    在前人研究的基礎上，本文基於陳龍珠等曾提出的一組實用飽和土波動方程，用解析或半解析的方法首次較系統而深入地研究了飽和半空間地基與基礎的扭轉振動問題，主要工作有：對于飽和地基上剛性圓板的扭轉振動，作者首先採用hankel變換求解了動力控制方程，得到了該控制方程在hankel變換域內的通解，然後由混合邊值條件建立了飽和地基上剛性基礎扭轉振動時的對偶積分方程，並將其化為易於數值求解的第二類fredholm積分方程，用數值方法計算了基礎的動柔度和扭轉角幅值與振動頻率的關系曲線，並將其與單相彈性介質情況進行了對比分析。
  19. A study on the proposed scanlan linearity has discovered that if the self - excited loads and movement of the model and velocity constitute a linear relationship, and the model vibration accounts for a sine function of the frequency, the rate of the high - order harmonic waves should be quite small

    考查了scanlan的線性假定：如果自激力與模型運動的位移、速度成線性關系，模型振動是某一頻率的正弦函數，那麼相應的自激力也應是這一頻率的正弦函數，高次諧波的分量應極小。
  20. After analyzing the traditional methods of generating exciting signals in vibration control system of electrodynamic ( electrohydraulic ) shaker, a new method of adjusting the skewness and kurtosis of exciting signals by second phase modulation is proposed. based on this method, a new algorithm for generating super - gaussian and quasi - random vibration exciting signals with specified psd, skewness and kurtosis is proposed. simulation and experimental results validate the algorithm

    2 .通過分析目前電動（液）振動臺數字式隨機振動控制系統中廣泛採用的激勵信號生成原理，在其基礎上提出了一種通過二次相位調制來控制激勵信號峭度值和偏斜度值的方法，分別得到了頻譜可控的對稱和非對稱分佈超高斯偽隨機激勵信號生成演算法，並進行了數值模擬和試驗驗證，為研究頻譜可控的超高斯真隨機激勵信號生成技術奠定了基礎。
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