period waves 中文意思是什麼

period waves 解釋
波動周期
  • period : n 1 時代；期；時期；期間；階段。2 〈the period〉現代，當代。3 周期；【地質學；地理學】紀。4 終結...
  • waves : WAVES ＝ Women Accepted for Volunteer Emergency Service 〈美舊〉（海軍）婦女預備隊。
  1. The aryans came in several waves, over a period of several hundred years

    Aryans進來幾波浪，在幾百歲月中。
  2. In the second chapter, the basic theory and method of how to use far - field body - waves to invert for the seismic moment tensor were expatiated systematically. the moment tensor solutions of the march 25, 1998, antarctic plate earthquake ( mw = 8. 1, iris ) and the june 4, 2000, southern sumatra, indonesia, earthquake ( ms = 8. 0 ) were inverted using teleseismic body waves recorded by long period seismograph stations of the iris global seismic network

    並用iris全球地震臺網的遠場體波資料反演了1998年3月25日南極m _ w8 . 1 （據iris ）地震的矩張量和2000年6月4日印度尼西亞蘇門答臘南部m _ s8 . 0地震的矩張量。
  3. However, the earliest long-period seismographs recorded dispersive waves with large transverse displacement components in the main tremor.

    但是，最早期的地震記錄，就記錄下了主震中具有很大橫向位移分量的頻散波。
  4. As 3 flowers from rise period the trend sends exhibition period, development strategy sublimate arrives " internationalization of management diversity, specialization of production, market ", 3 beautiful cars control zhejiang systematic limited company will continue to carry on " excelsior, pursuit is outstanding " 3 beautiful spirit and " rapid report, act instantly " 3 beautiful style of work, brave the wind and waves, for casting " refrigeration component is regnal " and ceaseless development innovation

    隨著三花從提高期走向發展期，發展戰略升華到「經營多元化、生產專業化、市場國際化」 ，浙江三花汽車控制系統有限公司將繼續發揚「精益求精、追求卓越」的三花精神和「迅速反映、立即行動」的三花作風，乘風破浪，為鑄就「製冷部件王國」而不斷開拓創新。
  5. In this paper, a method assessing harmonic impedance by synchronously layered distortion waves is proposed, which is based on the " fluctuations method " - a simple and effective means. however the method is based on the fourier transform, which can just precisely analyze the signals whose cycle is integer times as broad as that of fundamental wave. with sampling windows widening, the variations of distorted signals in a fundamental period are weakened

    本文是以一種被廣泛採用的非干預式諧波阻抗估計方法? ? 「波動量」法，的基礎上，針對現有方法以直接的fourier變換為分析工具，只能對基波周期的整數倍窗口采樣信號進行分析，畸變信號在一個基波周期內的變化隨采樣窗口增大而被弱化，並且，諧波次數越高，解析度就越低，大大限制了諧波阻抗估計的準確性的提高。
  6. Known as the time of trial, this period is marked by tidal waves sweeping across the rough seas, the ash and smoke from thousands of volcanoes blotting out the dim fight of nocturne ' s sun, and the ground gripped by constant earthquakes

    這樣劇烈的運動所達到的力量導致了海水的上漲，無窮無盡的煙塵甚至遮蔽了陽光，地面如同被折裂一般扭動著。
  7. Distribution of height and period of wind waves in south dongting lake

    南洞庭湖風浪波高和周期的分佈
  8. Based on data collected from east china sea, the waves are calculated and analysed statistically, therefore as obtained the relation between wave height and significant period as well as average period

    摘要根據實測數據對我國主要漁區（東、黃海）的波浪進行了統計分析，得出適用於該海區的有效波高與有效周期及有效波高與平均周期的統計關系式。
  9. 2. second harmonic generation in superlattice is derived from the coupled equation of three waves i discusing the relationship between the period of ppln and pumping wavelength. 3. on the theory of optical parametric oscillators, ppln - opo are analyed. theoretical analysises on temperature tuning and period tuning are presented

    以光參量振蕩理論為基礎，分析了ppln opo在不同泵浦波段的調諧特性，重點討論了加ln opo的溫度調諧和周期調諧特性以及ppln opo的溫度帶寬周期帶寬，從理論上研究了ppln opo信號光的轉化效率和輸出特性。
  10. The chinese northern sand - dust storm was forecasted to increase gradually in waves, entering into a new round of relatively active period

    預計未來中國北方沙塵暴將在波動中逐漸增加，進入新一輪的相對活躍期。
  11. When the frequency approaches zero, the factor approaches zero correspondingly ; 2 ) the amplitude of interaction factors changes with the incident angle of rayleigh waves and reaches maximum when is zero. moreover, with the increase of, the wave period shortens apparently ; ( 3 ) the amplitude of interaction factors decreases as the pile spacing increases and approaches to zero when the pile spacing is 15 ; 4 ) the amplitudes of interaction factors increase clearly with the increasing stiffness ratio of pile to soil ; 5 ) the lat eral seismic response of fixed - head pile groups is much smaller than that of free - head pile groups. moreover, the pile - group effects induced by rayleigh waves can be neglected ; 6 ) the lateral seismic response of piles at different location differs from each other

    得到了以下結論： 1 ）樁的相互作用因子隨頻率呈周期性變化，在振動頻率比較低的情況下，樁的橫向相互作用因子也較低，當頻率趨近於零時，相互作用因子也趨近於零； 2 ）樁的相互作用因子的幅值隨瑞利波入射角度的變化而變化，在= 0情況下幅值最大，且隨入射角度的增加，波動的周期明顯縮短； 3 ）樁的相互作用因子的幅值隨著樁與樁間距的增加而減小，至s d = 15時，樁的相互作用因子基本趨近於0 ； 4 ）在頻率比較低時，相互作用因子幅值隨樁土相對剛度比的增加而顯著增加； 5 ）樁頂固接可以有效地降低群樁的橫向地震響應幅值，由瑞利波產生的群樁效應可以忽略不計； 6 ）群樁中不同樁位的樁的橫向地震響應是不同的，每根樁所在的樁位對其橫向地震響應有很大的影響；刀樁數的增加並不能減小樁的橫向動力響應。
  12. Time history analysis is carries on after the seismic waves being numbered according to period, input values of seismic wave to vibration equation of system, adopt the method of progressive integral to gain the whole course of the structure ' s state at the whole earthquake

    時程分析是將地震波按時段進行數值化后，輸入結構體系的振動微分方程，採用逐步積分法得出結構在整個地震時域中振動狀態的全過程。
  13. The concepts for the long period oscillation improvement in hwa - lien harbor include destroying the wave field structure of the incident waves, reducing the incident wave energy, and dissipating the energy of long period wave in the harbor

    至目前為止，有關花蓮港長周期振?多認為集中於?風作用時期，而改善的構想則大致有：破壞入射波的波場結構、削減入射波能、以及消散港內的長波能量。
  14. In period of the eighth five - year plan of china government, correlated and statistical analyses were carried out by nanjing hydraulic research institute in terms of the situ - observation data of winds and waves and historical synoptic chart in order to the dredge of the sea - route of the yangtse river estuary, and empirical relations between wave and wind velocity and between wave and wind region

    進入「八五」期間，為整治長江口深水航道需要，南京水利科學研究院曾對引水船測站1960 - 1980年實測風與浪的資料進行過相關分析，結合歷史天氣圖進行的概率統計分析，得出了波浪與風速、風區的經驗關系。
  15. The new seismometer will enable seismic analysis and epicentre determination to be done with higher accuracies, and will also provide more comprehensive seismic information for use by the construction industry. a broadband seismometer responds well to seismic waves with periods from 0. 02 to 100 seconds, overcoming the limitations of long - period and short - period seismometers. from 1979 to 2004, the hong kong observatory has recorded 51 locally felt earth tremors. among these events, six earthquakes occurred within hong kong including one in 1983 at mai po, two in 1982 and three in 1995 over the sea east of the lantau island

    自一九七九年至二四年，香港天文臺共錄得五十一次香港市民有感的地震，其中六次發生在香港境內，包括一九八三年有一次在米埔，一九八二年有兩次及一九九五年有三次在大嶼山東部海域，這些境內地震引起的震動均屬十分輕微，強度只有黎克特製一至三級。
  16. This approach doesn ' t require synchronized sampling and integer period truncation, and can obtain directly the frequencies, amplitudes and phases of fundamental waves and harmonics

    該方法不需要同步采樣和整周期截斷，可一次性獲得電力系統基波及各次諧波的頻率、幅值和相位。
  17. At the same time, the hong kong observatory also began to keep a record of locally felt tremors reported by the people of hong kong. the seismometer used was of the long - period type, sensitive to seismic waves with periods around 15 seconds and was suitable for detecting distant earthquakes

    天文臺總部使用的地震儀屬于長周期地震儀，對震動周期約15秒的震動最敏感，適合監測遠處發生的地震，結合其他國家的地震站數據可以測定強烈地震的震央位置。
  18. Firstly, acoustic waves propagation in id quasi - periodic system is studied by means of the transfer matrix method. the transmission rate, reflection rate, energy flow, logarithmic energy flow, energy density and lyapunov exponent are obtained numerically. we explain all these parameters " relations with frequency and the size of system, and compare these p arameters with those o f periodic system. we find that these parameters are fractal in this quasi - period system

    通過轉移矩陣的方法，數值地得到了系統的傳播系數t _ n 、反射系數r _ n ，能流密度j _ n 、能量密度e _ n 、李雅譜諾大指數_ n ，給出了以上各量與系統大小n以及頻率之間的關系，發現這些量存在著與周期系統不同的準周期性質，其能量會出現局域化現象，能流以及能量密度都具有分形結構，給出了相應的理論解釋。
  19. According to the different response under different earthquake waves, the paper discussed the long - period character of the isolation structure. the results of analysis indicates that the isolation structure has better effect for the earthquake wave which was dominated of short - period wave

    針對隔震結構在不同地震波下響應的特徵和程度的不同，本文對隔震結構的長周期效應進行了分析和探討，並提出了隔震結構時程分析計算時地震波選取的建議和方法。
  20. According to the structural dynamic behaviors under different site conditions and seismic waves with different platforms, the relationships between the structural response and site predominant period, as well as platform of seismic wave were built up, by which the most unfavorable earthquake excitations of single - layer spherical shell were obtained

    通過對場地卓越周期及地震波平臺段持時的研究，建立結構動力響應與場地卓越周期及地震波平臺段持時之間的關系，明確了何種條件下的荷載為結構最不利外荷載。
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