instantaneous characteristic 中文意思是什麼

instantaneous characteristic 解釋
瞬態特性
  • instantaneous : adj 即刻的，瞬間的。 an instantaneous bomb 瞬發炸彈。 instantaneous death 即刻死去。 an instantan...
  • characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
  1. The maximum of instantaneous global radiation is beyond 1000w / m2 and the ten - days average intensity is 338. 90w / m2 because of high atmospheric transparency over semi - arid rainfed agriculture region of loess plateau between june and august. global radiation, reflected global radiation and surface long wave radiation emerge the characteristic of daily variations on a typical clear day and cloudy day, whereas atmospheric long wave radiation has not this characteristic. meanwhile, net radiation, latent heat flux sensible heat flux and soil heat flux appear the same characteristic as the mean daily variations above spring wheat field and bare soil on a typical clear day and cloudy day

    黃土高原半乾旱雨養農業區夏秋季大氣透明度較高，晴天地面的總輻射值最大瞬時值均超過1000w m ~ 2 ， 6 8月總輻射旬平均強度為338 . 90w m ~ 2 ；典型晴天和陰天總輻射、反射輻射、地表長波輻射均表現出明顯的日變化特徵，而雨天沒有明顯的日循環規律；無論是晴天、陰天還是雨天，大氣長波輻射基本沒有明顯的日變化規律。
  2. Some problems due to the essential characteristic of speech, which include levity 、 dynamic 、 instantaneous 、 continuum and so on, cause difficulties in recognition practice

    語音信號本身的特點（包括多變性、動態性、瞬時性和連續性等）造成了語音識別技術實現上的困難。
  3. Taking dc motor test as an example, a creative idea of applications of some advanced signal processing tools, such as time - frequency analysis, wavelet, and instantaneous frequency ( if ) evaluation, in motor testing field is presented. the paper systematically summarizes basic theories of time - frequency analysis and wavelet transform based on which an in - depth research of effective if evaluation based on wavelet ridge and wavelet curve is carried out. in the end a fast t - n characteristic testing system with neither torque nor speed sensor is successfully developed

    本論文主要關注小波分析在電機性能自動測試系統中的應用，針對傳統電機測試系統以及信號處理技術在電機測試領域中應用的不足，以直流電機為例，提出了將時頻分析、小波包變換以及基於小波脊的瞬時頻率提取方法應用到電機測試領域的新思路；較系統地總結了時頻分析和小波變換的基本理論，深入探討了基於小波脊線和小波曲線的瞬時頻率提取，並成功開發了基於正交小波包分析和基於小波脊線的瞬時頻率提取的無轉矩轉速傳感器的直流電機快速測試系統。
  4. The paper establishes mathematics model of electromagnetic heating system of eddy current field and temperature field, and gives corresponding discrete format with elements as eight nodes, hexahedron equal cell, through calculating eddy - current field to gain the internal heat source that the temperature field needed, to use discrete method to solve the problem of induction - heating part ' s temperature field by axial symmetrical electromagnetic, and then to analyze the characteristic of instantaneous temperature field

    本文建立了電磁加熱系統的渦流場和溫度場間接耦合的數學模型，分析了不同頻率下渦流和溫度的分佈情況，並以八節點六面體等參元為例給出了渦流場對應的離散格式，通過計算渦流場獲得溫度場所需要的內熱源強度，加熱部件的溫度場以軸對稱格式進行離散求解，並對瞬態溫度場有限單元法的求解特點進行了分析。
  5. Thesis is in simple introduction a few analysis method and steady data of fettles with the foundation of the characteristic sketch of the data of instantaneous fettle lastly, put forward vibration signal of some concrete problem

    論文在簡單介紹幾種分析方法以及穩態數據和瞬態數據的特徵圖形的基礎上，提出了振動信號中的若干具體問題。
  6. Sum up the characteristic of all kinds of the solar energy collector through the way in which the solar energy collector classifies ; analyse the principle and characteristic of the vacuum hot - tube collector of solar energy ; study the method of calculating the instantaneous efficiency of the vacuum hot - tube collector of solar energy, then prove the method through the experiment means

    通過對太陽能集熱器分類的方式對各類太陽能集熱器的特點作了歸納，並得出在遼河油田進行太陽能熱利用就必須採用熱管式真空管太陽能集熱器的結論;分析熱管式真空管太陽能集熱器的原理和特點;研究熱管式真空管太陽能的瞬時效率計算方法，然後進行了實驗驗證。
  7. Several characteristic parameters are extracted from the angular velocity curve and the acceleration curve of crankshaft instantaneous rotation, and the quality of them is evaluated by use of the gray relation analysis method and the method for inspecting the consistency of the extremum cylinder number

    在瞬時轉速曲線和角加速度曲線上提取幾個特徵參數，再用灰色關聯度分析方法和極值缸號一致性檢查法對特徵參數的優良性進行評價。
  8. Based on the commonly used strip theory with the extension of taking into account the instantaneous variation of the wetted hull surface during the motion and its effects on the ship hydrodynamic characteristics, this dissertation mainly calculates the ship motions and loads in waves in time domain and elementarily investigates some nonlinear characteristic of ship motion and hydrodynamic coefficient. it is hoped that the research had an engineering value for the predication and evaluation of seakeeping performance in the concept ship design stage

    本文基於擴展的切片理論，計入船體運動時濕表面的變化及其對船體流體動力性能的影響，在時域內計算了船舶在波浪中的運動和載荷，並對船舶水動力系數及運動中的一些非線性因素進行了初步的探討，本文的研究對船舶設計階段的耐波性能評估具有工程實用價值。
  9. For those biological signals like echo of bat or whale, as well as man - made system signals like radar or sonar signal, the instantaneous frequency of signal component contains important information and could be used for signal model parameters extraction. so that the proper choose of transformed domain and signal characteristic extraction method is of crucial important. the ridge extraction method used for signal characterization was first proposed in the 1990s, it ' s based on the study of the phase of the wavelet ( or other linear ) transform

    對于許多實際的信號，如蝙蝠發出的超聲波、鯨魚的叫聲等生物信號，以及雷達、聲吶等人造系統產生的信號而言，信號瞬時頻率的變化規律反映了信號重要的特徵，並且也是信號模型中關鍵的參數，因此選擇合適的變換域提取信號的瞬時頻率信息，並選擇合適的方法對信號進行重建是很重要的問題。
  10. The results show that the fracture of a broken tube is a kind of expansion form and a typical ductile fracture, and has instantaneous overheat blowout characteristic under the high temperature

    結果表明，爆管斷口為脹開式爆口，為典型的塑性斷口，具有高溫瞬時過熱爆管特徵。
  11. Abstract : the simulated calculation and analysis of the fluctuation of the instantaneous speed of a diesel engine are presented. the important factors, influencing the measurement precision of the instantaneous speed, are discussed. the correct measurement method is presented. the instantaneous speeds of diesel engine are measured and processed in a laboratory condition. compared the simulated instantaneous speed with the measured instantaneous speed, the simulated result is correspondence with the measured result. the characteristic parameters and the criteria of the instantaneous speed for detecting the leakage of valves in diesel engine are provided, and diagnosis accuracy is confirmed on 4120sg diesel engine

    文摘:對瞬時轉速波動進行了模擬分析計算；實測了發動機的瞬時轉速；對比了實測與模擬計算的瞬時轉速波形，兩者相當一致；討論了影響瞬時轉速測量精度的關鍵因素；提出利用瞬時轉速進行故障診斷的特徵參數及判據，並在診斷4120sg型柴油機氣門漏氣故障中得到證實
  12. The simulated calculation and analysis of the fluctuation of the instantaneous speed of a diesel engine are presented. the important factors, influencing the measurement precision of the instantaneous speed, are discussed. the correct measurement method is presented. the instantaneous speeds of diesel engine are measured and processed in a laboratory condition. compared the simulated instantaneous speed with the measured instantaneous speed, the simulated result is correspondence with the measured result. the characteristic parameters and the criteria of the instantaneous speed for detecting the leakage of valves in diesel engine are provided, and diagnosis accuracy is confirmed on 4120sg diesel engine

    對瞬時轉速波動進行了模擬分析計算；實測了發動機的瞬時轉速；對比了實測與模擬計算的瞬時轉速波形，兩者相當一致；討論了影響瞬時轉速測量精度的關鍵因素；提出利用瞬時轉速進行故障診斷的特徵參數及判據，並在診斷4120sg型柴油機氣門漏氣故障中得到證實
  13. It has high resolution of frequency and low resolution of time in low frequency part this characteristic is fit to probe normal signal with instantaneous abnormal phenomenon and show its components. so, wavelet transformation is seen as signal microscope. there is good effect to detect malfunction in dynamic system by means of continuous wavelet transformation

    這很適合於探測正常信號中夾帶的瞬態反常現象並展示其成分，所以被譽為分析信號的顯微鏡，利用連續小波變換進行動態系統故障檢測與診斷具有良好的效果。
  14. These are correlation characteristic parameter, fourier spectrum characteristic parameter, power spectrum characteristic parameter, time domain amplitude characteristic parameter, linear prediction coding coefficients, instantaneous characteristic parameter, absorb and decay coefficient, velocity characteristic parameter and wavelet packet transform characteristic parameter. the parameters contain the surface relatively wide, the prediction which is suitable for the goal of many kinds of seism needs

    分別為：自相關特徵參數、付立葉譜特徵參數、功率譜特徵參數、時域振幅特徵參數、線性預測編碼系數、瞬時特徵參數、吸收衰減系數、速度類特徵參數和小波包變換特徵參數，參數涵蓋面較寬，適用於多種地質目標的預測需要。
  15. The control technology of phase selection has been used on beaker ' s instantaneous characteristic test device for jiang su chang shu switch plant. the precision is ?

    採用上述技術研製的選相分合閘裝置，應用於斷路器瞬動特性試驗設備中，選相精度為1 ，較好地消除了試驗中的暫態電流。
  16. Second, according to the characteristic of the instantaneous change of action potential accompanied by the nerve impulse, we use h - h equation to describe such change, and conduct simulation combined with sr theory

    然後根據產生神經沖動時動作電位全或無式瞬時快速變化的特點，採用h - h方程作為描述這種變化的神經元模型，結合隨機共振理論進行了模擬研究。
  17. The ridge characteristic related closely to the instantaneous frequency of the signal. a serial of ridge extraction and signal reconstruction algorithms have been developed using phase or module information of parameters on the ridges

    由此發展出一系列根據變換域參數的相位信息、模值信息等提取脊的方法，同時也發展出各種利用脊上的信息對信號進行重建的方法。
  18. Then expatiate the application of the characteristic method in solving hydraulic system instantaneous problem

    然後闡述特徵線法在解決液壓系統瞬態問題的應用。
  19. Due to the distinct superiority of wavelet transform ( wt ) and wavelet packet transform ( wpt ) in time - frequency analysis of non - stationary signals, instantaneous frequency law can be obtained directly from amplitude of wpt coefficients. thus an indirect t - n characteristic testing method can be implemented with satisfying precision

    該系統可以作為基於pc機與數據採集卡的自動測試系統的一個很好的例子，它充分利用了pc機豐富的計算資源與快速的運算速度，在間接法測試中具有獨到的優勢。
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