衰變速度 的英文怎麼說

中文拼音 [shuāibiànsùdù]
衰變速度 英文
rate of decay
  • 衰 : 衰動詞（衰弱） decline; wane
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. Secondly, the effect of thermocline to the intensity decaying rule for monostatic case is analysed

    然後分析了聲速躍變層對海洋混響平均強度衰減的影響。
  2. The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity. the bigger the seeds of the species and the earlier or later the seeds of the species matured, the higher the proportion of the seed rain damaged by animals. the quantitative variation of seed rain, active seed rain and seed bank did not take place at the same time. at early time, the number of seed banks of castanopsis fargesii, lithocarpus glabra, quercus myrsinrefolia, castanopsis plasyacantha, cinamomum subavenium. which own more active seed rain increased by geomitric series. the seed banks of castanopsis orthacantha and schima argentea were small, only survived a short time, and did not sprout next year. the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals, dying speed of seeds and their resistance to pathogens and adverse circumstances, and the state of seed germination

    對重慶四面山常綠闊葉林建群種種子雨、種子庫的研究表明，建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種，其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫三者的數量變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等，其種子庫密度在早期以近幾何級數的方式增長，元江栲、銀木荷種子庫小，存在時間短，翌年無一年生萌發苗;種子庫數量動態、消減率動態決定於種子被取食的強度、種子衰老的速度以及種子對病菌、逆境的抗性和種子萌發的整齊性
  3. The effect of variation in surge shaft section size upon the reflection of water hammer pressure and the speed of quality fluctuation attenuation

    調壓井斷面尺寸變化對水錘壓力反射及質量波動衰減速度的影響
  4. The calculation shows that the attenuation of hydraulics oscillation relates to power, but other kinetic characteristics don ' t change with work point greatly

    通過計算表明，其水力振蕩衰減速度與出力有關，而系統的其他運動特性隨工況變化較小。
  5. Research shows : change of temperature & pressure of sand rock results in prominent change of seismic p and s wave velocity and dynamic & static modul and seismic attenuation of sand rock. change of pore liquid character and saturation results in change of seismic p and s wave velocity and attenuation of sand rock

    研究表明：巖石所處的溫度壓力條件的變化將導致縱橫波速度、動彈參數和衰減的顯著變化：孔隙流體性質（含水或油、氣）及飽和度的變化將引起縱、橫波速度、衰減的明顯變化。
  6. A new method of calculating the concentration distribution of radio - nuclides was proposed, in which the effect of gravity settlement, rain washing and the decay of the radioactive species re considered

    利用傾斜煙團模式，考慮實際過程中核素粒子的重力沉降、雨洗作用以及放射性衰變等因素的影響，提出一種迅速估算放射性核素擴散濃度的方法。
  7. Based on the resolving algorithm of continuous - layer method, the time order analyzing curves, acceleration curves and the response spectra of transfer function at the different points of the ground and at the same point on the different ground conditions are gained. it demonstrates that the responses of ground in x, y and z axial directions all change by time, and the obvious wave propagation appears in ground. for different observing points on the same ground condition, at more distant points from the load line, the less swings are found, that is to say, vibration possesses the obvious characteristic of attenuation

    基於分層法的解析演算法，得到了在不同點以及在同一點但不同地質條件下的時程分析曲線、加速度變化曲線和傳遞函數反應譜，結果表明，地基土在x 、 y 、 z三個方向的響應都是隨時間變化的，並且伴隨有明顯的波動現象產生；對于相同地質條件的不同觀察點，距離荷載作用線越遠的地方振幅越小，即振動具有明顯的衰減性。
  8. The rate at which radioactive elements disintegrate varies from one element to another.

    放射性元素的衰變速度隨元素種類的不同而不同。
  9. The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed

    主要工作在以下幾個方面： 1 、針對頻率選擇性衰落通道：結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法，與傳統方法相比，該方法計算量更小，收斂速度更快，性能更優，且對系統階次的過確定表現穩健，具有實際均衡應用價值； 2 、針對時間選擇性衰落通道：提出一種基於迫零均衡的時間選擇性通道均衡方法，演算法結構簡單； 3 、針對時變色散通道：利用瞬態均值曲線提取通道時變信息，對之ar建模，利用卡爾曼濾波器跟蹤時變通道抽頭變化，可以快速跟蹤通道變化；基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法，提出了新的單輸入多輸出色散時變通道均衡與識別演算法，同樣具有對通道階次過確定保持穩健的優點；結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法；研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題，給出一種時變系統處理模型。
  10. According to structural characteristics of multi - phased alloy steels and the properties of ultrasonic propagation, microstructures characterization with different heat treatment processes ( normalizing, quenching / annealing, quenching plus low tempering, quenching plus high tempering ) for three steels ( 40cr, 38crmoal, gcrlssimn ) was studied experimentally by using ultrasonic methods. ultrasonic velocity, relative attenuation coefficient, and power spectral analyses were researched on the same samples respectively, on the basis of theory and experiment, the sensitivity and other characterizations of the three methods used to distinguish different microstructures were compared

    根據具有多種相結構合金鋼不同熱處理轉變產物的組織特點，以及超聲波在其中的傳播規律，利用超聲波速度、相對衰減系數以及功率譜分析三種方法，對三種鋼（ 40cr 、 38crmoal及gcr15simn ）不同熱處理（正火、淬火退火、淬火+低溫回火及淬火+高溫回火）轉變產物的顯微組織進行了超聲表徵研究。
  11. The results revealed that the fatigue degradation of the material includes three stages : micro - crack appearing at initial stage, a long process of crack propagation and fatigue. failure of the material after suffering the extraordinary degradation of stiffness

    結果表明，材料的疲勞衰變主要分為3個階段：產生小裂紋的初始階段；損傷累積擴張階段；材料剛度加速退化，疲勞破壞階段。
  12. Our metabolism slows down, causing us to put on extra weight ; our joints stiffen ; we heal more slowly ; our reflexes begin to lag

    我們的新陳代謝慢下來，導致我們變胖；我們的關節變得僵硬；我們的復原速度減慢；我們的反應能力也開始衰退。
  13. In the process to create and pass to the key account value, it is necessary to grasp the success factors for the kam which includes common interest, communication, commitment, credibility, compromise, collaboration and the change of the relationship. part 4 give a method for the kam of hd copper co., ltd., it requires the company construct the key account belief, make a key account management plan strategically, do the work that the plan requires and control the relationship between the key account and the hd copper co., ltd., check the work and notice the change of the relationship, and develop the new key accounts. the main innovative contribution in the paper includes the follow aspects : establishing a system analysis framework for kam in strategically thinking the relationship between the company and its key accounts, exploring the significance and profile of the key account group of profitability, strategy, and loyalty, putting forward three levels of the key accounts " value, concluding the success factors for kam, thinking the relationship between the company and its key accounts as four stages

    為了實現這個目標，本文的第三部分深入分析了大客戶關系管理的有效策略及需要把握的成功要素，為了制定有效的策略，需要把握大客戶關系變化的特徵，把大客戶關系發展過程中的生、長、衰、死四個階段都管理好:大客戶關系管理的有效策略是創造和提升大客戶價值，需要從價格、質量、速度、技術、創新和品牌等大客戶價值要素入手，把握大客戶價值創造的動態特徵，向大客戶傳遞核心大客戶價值、大客戶期望價值和超越大客戶期望的價值，大客戶價值是大客戶認知利益與大客戶認知價格的差額;在為大客戶創造和傳遞大客戶價值時，需要把握住大客戶關系管理的成功要素，包括企業與大客戶的共同利益基礎、雙向交流和溝通、企業信守承諾、樹立企業的信譽、企業對大客戶必要的妥協和讓步、與大客戶合作、注意公司與大客戶內部和外部環境及關系本身的變化。
  14. The influence of coriolis acceleration level on human oculomoor and perceptual responses to investigate the influence of different coriolis acceleration levels ( 0. 329 cm / s2 > 0. 493 cm / s2 ^ 0. 658 cm / s2 ) on human subjective sensation and nystagmus. basic parameters including the pattern, the duration and the intensity of ci as well as mean slow phase velocity ( mspv ), beat, time constant of slow phase velocity decay and duration of horizontal and vertical eng, were recorded

    493cm s 『 （ n 』 20cm s2 ） 、 0石58cm婦』 （ 『 15cln s刁三種不同強度的科里奧利加速度引起的科里奧利錯覺形態、強度、錯覺持續時間及伴隨的水平、垂直性眼震的眼震次數、最大慢相速度、平均慢相速度、慢相速度衰減時間常數、持續時間等參數的變化進行了觀察。
  15. ( 3 ) we can detection the azimuth of crack growth by abnormal amplitude or the discrepancy of wave - speed. ( 4 ) we can guess whether crack contains fluids by the change of p - wave speed. second, using pore model, under press and temperature, we have studied the influences of pore density on the characteristic parameters of seismic wave

    第一、利用人工裂縫模型，研究了裂縫密度、方位和張開度的變化對地震波屬性參數的影響，根據實驗結果，總結出：可利用橫波分裂的不同程度來檢測裂縫密度的高低；可利用縱橫波的振幅、主頻、衰減（或品質因子q ）和主振幅的變化來檢測裂縫張開度的變化；可利用速度的差異和振幅異常來檢測裂縫發育的方向；可利用縱波速度的變化來推測裂縫中是否含流體。
  16. 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。
  17. 2. the discrete sampling value of field track vibration acceleration wave is transformed by fft and analyzed by deterministic analysis. one degree of freedom simplified model is used for train and the kinematic equilibrium differential equation is deduced to simulate the vertical wheel system

    最後，通過線性回歸得到了該地鐵軌道交通引起的環境振動的振級衰減公式; 2 .通過快速fourier變換，對實測的軌道振動加速度進行了數定分析。
  18. Along with increase of pressure, the parameters such as velocity, amplitude, main frequency and quality factor of seismic wave change big gradually, while change very weakly with the change of temperature. through testing research for artificial crack and pore model, we conclude that crack density, azimuth, opening and the change of pore have obvious influences on speed, amplitude, attenuation ( or quality factor ) and main frequency of seismic wave etc. but, seismic wave dynamic characteristics are more evident than its kinematical characteristics for the change of crack and pore parameters. therefore, it offers reliable experiment foundation for detecting crack and pore by seismic wave kinematical characteristics ( such as amplitude, attenuation and main frequency etc. )

    通過對人工裂縫和孔洞模型的超聲波實驗研究，可以認為：裂縫密度、方位、張開度和孔洞密度的變化對縱橫波的速度、振幅、衰減（或品質因子q ）和主頻率等參數均有明顯的影響，但裂隙參數的變化對地震波動力學特徵參數（振幅、衰減、主頻率等）的影響遠遠大於對運動學特徵參數（速度等）的影響，這為利用地震波的振幅、衰減和主頻率等屬性參數進行裂縫和孔洞特徵的檢測提供了可靠的實驗基礎。
  19. The accurately controlled signal source generates sinusoidal elastic wave accurately controlled in frequency and stable in phase to " illustrate " underground media. time signal stacker receive signal by stacking and doing fft to measure the transfer function of media. " sompi " cepstrum method retrieve group velocity travel times and decayed factors of wave element from observational data of transfer function in a limited frequency window

    精密可控震源用於產生頻率精確相位穩定的正弦彈性波以照射地層內部，信號疊加器通過對接收信號進行疊加和進行傅立葉變換的方式實現對介質傳遞函數的精密測量， 「存否」倒譜方法能夠根據一段窄帶頻域傳遞函數數據獲得時域上各個波成分的群速度傳播時間和介質衰減因子。
  20. Expressions are first established for c ( w ) and a ( w ) in terms of the fourier transforms of the wave shapes after two distances of travel. this is the general solution of the problem

    首先在對兩個傳播距離不同的波進行傅立葉變換后，建立波的傳播速度c （ w ）和材料的衰減系數a （ w ）兩個項的表達式，得出問題的一般結論。
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