重定義頻率 的英文怎麼說

中文拼音 [zhòngdìngyìbīnlǜ]
重定義頻率 英文
frequency redefinition
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 義 : Ⅰ名詞1 （正義） justice; righteousness 2 （情誼） human ties; relationship 3 （意義） meaning; si...
  • 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...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 頻率 : frequency; rate
  1. The precipitation frequencies is analysed according to 1956 ~ 2000 years of rainfall record series in baoding area. the features of distribution of rainfall are detailed evaluated. firstly, the distribution of monthly precipitation is not even. for instance. the annual rainfall amount is about 548mm in whole year, about 80 % of them in summer season. secondly, yearly variation of rainfall is greater. thirdly, the abundant years usually are followed by short years, but the important changes have taken place in the last decades. before 70 ' s the abundant years took the dominant position, from the 70 ' s to the middle of 80 ' s the short years took place more frequently than ever. after the later of 80 ' s, the short years hold the main position. the above knowledge is instructive for guiding the rainwater resources effective utilization

    本文利用1956 2000年保定市的長系列降雨資料，對保定市降水量進行了頻率分析、年內變化分析和多年變化分析，明確了保定市降水量年內、年際間的變化情況：保定市降水量年內分配不均，汛期（ 6 - 9月）占年降水量的81 。保定市降水量年際間變化大，豐水年和枯水年交替發生， 70年代以前以豐水年段為主； 70年代到80年代前期降水量豐枯交替頻繁，總的接近於枯水年段； 80年代後期至今以枯水年段為主。這種降水分佈規律對農業生產雨水資源的高效利用具有重要的指導意義。
  2. Abstract : the paper presents the study on problems of self - excitation ， over - voltage ， frequency and voltage stability ， organizational measures and arrangement in the course of black start and restoration of the system. through simulation of black start on east china power system ， above problems are analyzed and solved ， it shows that working out strict black start scheme may not only speed up system restoration ， reduce outage losses ， but also have important significance to emergency release or power system islanding

    文摘:研究電力系統黑啟動的過程及恢復中存在的自勵磁、過電壓、頻率和電壓穩定、組織措施及安排等問題，並通過華東系統黑啟動模擬對上述問題進行分析和解決，證明制定嚴格的黑啟動計劃不僅可以迅速恢復系統、降低事故損失，而且對處理緊急狀態或地區性解裂有重要意義。
  3. Article has introduced partition and the definition of oscillator frequency stability, and analyzed emphatically to cause the vibration factor with instability frequency, this paper elaborated the major measure and steady method that how to raise frequency stability

    摘要介紹了振蕩器頻率穩定度的定義與劃分，著重分析了導致振蕩頻率不穩定的因素，詳細地闡述了提高頻率穩定度的主要措施和穩定方法。
  4. Electron gun is the foremost parts of twt, it can produce electron beam with a certain shape and current, in order to guarantee the reliability and security of work, it ’ s design have to meet to the requirement not only of electric parameter, but also all kinds of subsidiary characteristics such as filament pyrogenation efficiency, warm up time, shape size, pole space capacitance and the ability to be able to bear the press and all kinds of rigorous run conditions such as high temperature, high humidity, low air pressure, strong vibration and great strike

    由於行波管的大功率和高頻率等特性，目前還沒有任何其他的器件可以代替。行波管是應用高頻電磁場與電子注進行互作用的機理進行工作的，而電子槍是行波管中產生電子注並使它成型的基本部件，電子槍的結構設計決定了槍體自身必須具有良好的抗振可靠性，否則結構發生共振或振動位移過量，就會導致行波管的失效。因此對行波管電子槍的研究具有非常重要的意義。
  5. Chirp up down the chirp is played from start frequency to the end frequency and again to the start frequency in time defined by play chirp time

    短促聲波結束短促聲波從起動頻率對結束頻率播放，然後重新回到播放短促聲波時定義的頻率。
  6. It shows that when walk - off and diffraction effects could be ignored approximately estimation of the phase distribution of second - harmonic wave could be done. the far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. the phase distribution of both fundamental and harmonic wave is measured using hartmann - shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively

    這說明利用非線性光學頻率變換方法拓寬波前傳感器件的響應波段是很難實現的，但是，通常三波相互作用過程的研究均是建立在平面波和理想高斯光束之上，因此我們對于位相畸變倍頻過程的研究是非線性光學領域一個重要而有意義的新課題，它有助於人們更加深入理解非線性光學效應，為進一步合理利用之奠定了理論和實驗的基礎。
  7. These are the main contents : the characters in time domain and frequency domain of the background noise inside boiler are analyzed theoretically and studied by experiments, and the upper limit frequency of it is confirmed, these are very important to the diagnosis of boiler tube leak and avoid wrong alarms

    對爐內背景噪聲的時、頻域特性進行了理論分析與實驗研究，確定了爐內背景噪聲的上限頻率，這對爐管泄漏的診斷和防止誤報警具有重要意義。
  8. By simulating mathematically on frequency and on space, we can find the average speed of space field and the average speed of frequency field that is weighted by amplitude, and analyse their relation, and analyse the meaning of space speed variance x and frequency speed variance v. in the fourth part, how to ensure the height of cloud is introduced, and basing on the theory of wind field continuity, the height updating quality controlling is introduced. in the fifth part, the system of cloud wind is introduced, we tracked cloud - motion of consecutive satellite images with one - minute interval by the 1 - d fourier analysis technique and the two - dim fourier analysis technique and the fft analysis technique, and dispose them with quality controlling. in the sixth part, we summarized our research and put up with shortages of this article

    模擬模塊內各點的速度線性變化時，得到空間域平均速度以及頻率域以振幅為權重的平均速度，分析了空間域平均速度和頻率域以振幅為權重的平均速度的關系，並揭示空間域的平均速度的標準差_ x和頻率域的振幅為權重的平均速度的標準差_ v的意義，以及它們之間的關系；第四章介紹了雲跡風系統的高度指定以及風矢高度的劃分，並根據風場連續性原理，介紹了高度調整法的質量控制；第五章介紹導風系統的流程，選擇了三個時刻的ir雲圖，分別用一維傅立葉相位法、二維傅立葉相位法和快速傅立葉演算法計算一個風場個例，並對所得風場進行質量控制，並給出風場圖；第六章進行研究總結，指出不足和有待于進一步研究之處。
  9. An expression vector with fragment 9 in antisense orientation was constructed to block the expression of the relevant gene ( fragment 9 related gene, fnr gene ) in vero cells. interestingly, we found that the nontargeted mutation frequency induced by mnng was increased significantly, implicating that the product of the blocked gene may be involved in the inhibition of nontargeted mutation

    利用反義核酸技術構建含反向插入9號片段的真核細胞表達重組體並轉染細胞，以獲得反義rna阻斷vero細胞中相應基因的表達，發現mn 』 ng誘發的非定標性突變頻率顯著增高，提示被阻斷的相關基因的表達產物可能參與抑制非定標性突變的發生。
  10. The gain of the mems frequency reconfigurable pifa reaches 1. 5db in all the operation band. since the mems technology has not been used in antenna field widely, the mems frequency reconfigurable pifa in this paper has considerable referenced value to the application of mems antenna

    Mems技術現在還沒有大規模應用於天線領域，本文所設計的mems頻率可重構pifa天線是mems技術在天線領域應用的有益實踐，具有一定的借鑒意義。
  11. Revised report on the algorithmic language scheme. higher - order and symbolic computation, august 1998, 11 : 7 - 105. 4 adams s, de roure d. a simulator for an amorphous computer

    我們將這種需求程度定義為該點的數據重要性，同時將傳感器的報告頻率依據需要而定的這種形式稱之為適應性取樣adaptive sampling 。
  12. As the application of distributed computing is used much more widely ， distributed database becomes a significant part of information management it avoids a lot of disadvantages of conventional centralized database ， and is applicable to many situations distributed database is a set of data which is the unity logic ， but in fact these data is located on different sites it is of high availability ， easy expansibility ， high concurrency ， high efficiency and etc in distributed system ， data redundancy is a method to improve the speed of query and the availability of system distributed query should shield the lower level details of data redundancy from end users ， distributed transaction should ensure data from disaccord this paper introduces basic conceptions of distributed database firstly ， discusses distributed transaction and concurrent control ， describes the development prototype mysql ’ s characters ， architecture and executive mechanism ， then shows the skeleton model of dpsql and exposes the strategy and algorithm of distributed query and distributed transaction ， at last analyzes the extra expenses and response delay of distributed processes this paper exposes the implementation mechanism of distributed query and distributed transaction emphatically distributed query uses the strategy of “ read one ， write a11 ” s0 in such a system if user ’ s requests are read - - only for the most part and the distribution of data redundancy is plausible ， efficiency is very high distributed transaction uses two - 。 phase commit protocol to ensure the consistency of global data ， which has less communication overhead

    分散式查詢需要向用戶屏蔽數據冗餘分散的底層細節，分散式事務處理要保證全局數據完整，這都是傳統集中式數據庫不曾面臨的問題。本文首先介紹了分散式數據庫的概念性問題；接著討論了分散式事務涉及的定義及演算法；然後描述了dpsql的原型mysql的特性、結構和執行機制；繼而給出了dpsql的梗概模型，闡述了實現分散式查詢和分散式事務處理的策略及演算法；最後分析了進行分散式處理給系統增加的額外開銷和客戶端的額外響應延遲。本文重點描述了分散式查詢和分散式事務處理的實現機制，分散式查詢採用」讀一個寫全部」的本地優先策略，在讀操作頻繁的系統中，只要庫的分佈合理，單機效率極高，幾乎無任何附加開銷和延遲，而以整個系統的角度看來，吞吐量就更是優于單機系統；分散式事務處理採用兩階段提交協議，通信次數較少並能確實保證副本一致。
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