群延時 的英文怎麼說

中文拼音 [qúnyánshí]
群延時 英文
group delay
  • 群 : Ⅰ名詞（聚在一起的人或物） crowd; group Ⅱ量詞（用於成群的人或物） group; herd; flock
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  1. Of the eons of geological periods recorded in the stratifications of the earth : of the myriad minute entomological organic existences concealed in cavities of the earth, beneath removable stones, in hives and mounds, of microbes, germs, bacteria, bacilli, spermatozoa : of the incalculable trillions of billions of millions of imperceptible molecules contained by cohesion of molecular affinity in a single pinhead : of the universe of human serum constellated with red and white bodies, themselves universes of void space constellated with other bodies, each, in continuity, its universe of divisible component bodies of which each was again divisible in divisions of redivisible component bodies, dividends and divisors ever diminishing without actual division till, if the progress were carried far enough, nought nowhere was never reached

    隱藏在大地的洞穴里和能移動的石頭底下蜂巢和土墩子中那無數微小的昆蟲類的有機生物：微生物病菌細菌桿菌精子憑著分子的親和之凝聚力而粘在一根針尖上那幾萬幾億幾兆個多不勝數肉眼看不到的微小顆粒人類的血漿是一個宇宙，群集著白血球和紅血球，每個血球又各自形成一個空虛的宇宙空間，群集著其他球體各個球體連續性地也是由可分割的構成體形成的宇宙，各個構成體又可以分割成為幾個能夠進一步分割的構成體。就這樣，分子與分母實際上在並未分割的情況下就不斷地減少了。如果這個過程延續到一定時候，就永遠在任何地方也不會達到零。
  2. In this dissertation, the interactive system of delphastus catalinae ( horn ), its preys and competitor was studied, including comparison between alternative preys and natural prey consumed by d. catalinae ; the system of d. catalinae and its preys ; morphology comparison between d. catalinae and its competitor serangium japonicum chapin ; biology, ecology and predation of s. japonicum ; and also the interspecies competition between d. catalinae and s. japonicum. 1. besides whitefly pests, d. catalinae could also feed on two species of alternative preys : tetranychus nr

    Fijiensis和桃蚜myzuspersicae （ sulzer ） ，並在實驗室條件下，以自然獵物煙粉虱bemisiatabaci為對照，研究了替代獵物對小黑瓢蟲的發育、存活、繁殖及對實驗種群增長的綜合影響，結果表明： （ 1 ）小黑瓢蟲以蚜蟲為獵物時，成蟲不會產卵，但可延長成蟲的壽命；以紅蜘蛛為獵物時，成蟲可產卵並可完成整個世代。
  3. This thesis elucidates and analyses the key techniques and rules of aolr in detail, and introduces its simulation modeling of the integrated system infrastructure and each function modules. through systematic simulation of aolr in the performance of packet delivery rate, average end - to - end delay, average route set - up delay, routing overhead, and etc, the key techniques and algorithms are testified and can provide reference for practical system design and application

    通過對基於蟻群優化的負載均衡路由協議系統的模擬，從數據分組成功遞交率、平均端到端時延、平均路由建立時延、路由開銷等性能的模擬數據和曲線上，分別驗證了該系統中的幾項關鍵技術和演算法。
  4. The main idea of this model is to cut down waiting time for the last ( slowest ) individuals, by dynamic splitting the population into demes, which can then be processed without delay

    它的主要思想是通過動態分離種群為子群從而減少最差個體的等待時間，使得子群的演化不被拖延。
  5. The thesis establishes a theory system of contemporary furniture display of exhibitions through systematic analysis and many thinking modes : i. based on the connotation of furniture display and the backgrounds of the development of the exhibitions, the thesis clarifies the connotation and extensive meaning of contemporary furniture display of exhibitions : it is professional display activity which takes the furniture as the carrier and the efficient information transmit and trade as the basic purpose ; it is a systematic, multidimensional space design which is completed in special place, by special group of people ; it is a perfect unite by function, technique, art, culture, which embodies the inevitable alternative from simplicity and practicality to the humanism ; it is an effective distribution method that boosts the development of furniture firms and exhibition activities

    本文綜合運用了系統分析法和各種設計思維方法，確立了傢具展覽會展示設計的理論體系：一、本文首先從傢具展示設計的內涵與展覽會發展的背景入手，明確指出當代傢具展覽會展示設計的內涵與外延：是以傢具為信息載體，以高時效的信息傳遞和交易為根本宗旨的專業性的展示設計活動；是在特定空間內完成的、由特定人群參與的、系統的、多維的空間設計；是功能、技術工藝、藝術形象、文化內涵的完美結合，體現的是人類設計由簡單實用到實用之外蘊含有各種因素的人性化趨勢的必然選擇；是一種行之有效的傢具營銷方式和推動展覽業與傢具產業發展的有效途徑。
  6. According to all the sediment peaks of 35 floods observed at each station on the downstream of xiaolangdi, it analyzes the characteristic of delayed sediment peak and establishes a regression equation between sediment peak lag time for each section of xiaolangdi, huayuankou, jiahetan, gaocun, sunkou, aishan and lijin and peak discharge, sediment concentration of the peak, flood propagation velocity and fall velocity of suspended load of the previous station, which can search, make up and extend sediment peak lag time and provide a basis for accurate forecasting on sediment peak travel time of each station on the lower yellow river

    根據小浪底下游各站沙峰均滯後於洪峰的35場洪水，對沙峰滯後於洪峰的特性進行了剖析，建立了小浪底、花園口、夾河灘、高村、孫口、艾山、利津各河段沙峰滯后時間與上站洪峰流量、沙峰含沙量、洪水傳播速度、懸移質泥沙群體沉速之間的回歸方程，可以用來查補延長沙峰滯后時間，為下游各站沙峰傳播時間的準確預報提供依據。
  7. The spread of spartina not only make greatly destroy to the beach environment but also tamper with the breed aquatics graveness

    摘要大米草的蔓延，不但嚴重影響了灘塗養殖業，同時也對灘塗生態造成了巨大的破壞，致使紅樹林生態群大面積消失。
  8. Result and conclusion : there are obvious differences in sprouting, lamina spreading, bolting and " sprout tumble ", three times of " sprouting " and so - called " sprout tumble " and two fast - growing periods for plants in most of the populations in spring and autumn respectively were observed within a year, including mass bolting in may

    結果與結論：半夏各居群在出苗、展葉、抽薹及倒苗期等生長節律方面存在著差異：大部分半夏居群在本試驗栽培條件下具明顯的3次出苗和3次倒苗現象，並且在年生長期內表現出春秋兩個生長高峰期;從抽薹開花時間看，大部分居群在5月有1個抽薹開花高峰期，但具體起始和延續時間各居群間存在著較大的差異。
  9. Differential group delay measurement of single - mode components and devices by the differential phase shift method

    利用微分相移法進行單模元器件和裝置的群時延差測量
  10. The structures and dynamic changes of the artifical sand - fixing vegetation were studied based on the follow views : components of vegetation community, plant diversity, life - forms of vegetation, trends of plant growth, characteristics of the vertical and horizontal structure of vegetation, relationship between the vegetation community and environment ( including soil moisture temperature etc. ), relationship between the vegetation community and characteristics of plant physiological activities. some results were showed as follow : 1. components, diversity and life style of artificial vegetation in shapotou region the marked changes of artificial vegetation have taken place during more than 40 years, since the establishment of sand - fixing vegetation

    本文以騰格里沙漠東南緣寧夏中衛縣沙坡頭地區人工固沙植被作為研究對象，採用傳統生態學的野外調查方法，從植被群落的組成、多樣性、生活型、群落生長動態、垂直結構特徵、水平結構特徵、群落結構與周圍環境（土壤含水量、溫度）相互關系及其與植物自身生理生態適應特徵關系等多個角度研究了人工植被群落的結構及其動態變化，取得了如下研究結果： 1 、植被群落組成、多樣性及生活型：沙坡頭地區人工植被經過近50年的演變，從流動沙丘到固定沙地，沙地植被的動態變化經歷了從人工植被到人工?自然植被的轉變，從人工植被建立初期的少數幾種引種植物到現有30多種植物，隨著固定沙地時間的延長，植物種類日趨豐富，並且人工植被在15 25年、 40 50年兩個階段，物種的周轉速率最大，即群落結構變化最大。
  11. Some groups, as we have seen, have endured from the earliest known dawn of life to the present day.

    我們曾看到有的類群從已知的生命肇始時代一直延續到今天。
  12. Nothing but a temporary stay of execution for your kind

    一事無成！只不過是延長你這種群茍延殘喘的時間而已。
  13. Socket axe is one of the most representative wares of bronze ages in northeast china. this is not only because of its longtime lasting, but also its pattern differing in each area, which hints cultural pedigrees and human ’ s mobility

    直銎銅斧是中國東北地區青銅時代文化具有代表性的器物之一，不僅延續時間較長，而且不同區域出現的形制也有所不同，暗示著文化譜系和人群流動的意義。
  14. Calculations indicate that the carrier phase takes effect till the time width of the pulse envelope becomes smaller than the period of the carrier oscillation, and the interpretation of this phenomenon is also presented. it is the difference between phase delay and group delay that causes the sliding between the carrier and the envelope

    數值分析的結果表明，當脈寬小於光波周期時，相位的作用開始顯現出來，當脈寬比光波周期長時，載波相位的作用可以忽略，並分析了相位起作用的原因，用解析的方法說明正是相延遲和群延遲之間的差別造成了光載波在脈沖包絡下的滑動。
  15. A perturbation method by tight - binding approximation which provide the relation of phase constant and angular spectrum of fields of in - waveguide is presented. the strip width of phase constant can be given. on the other hand, the group delay - time due to the k dispersion in single - mode transmission can also be estimated

    提出一種利用緊束縛近似的微擾法計算陣列波導的相位常數與輸入光角譜的關系，由此算出相位常數的帶寬，並利用衍射方法估算單模傳輸中k色散引起的群延時。
  16. The reasons focusing only on ray travel times are " noise tolerance could be enhanced and the sensitivity to the environment model mismatch may be reduced by neglecting amplitude information ; phase ambiguity is eliminated by employing the group delay of arriving wave packets ; travel times are pseudo - linear functions of sound speed profiles of the medium, and the perturbation of ray travel time is much smaller than sound pressure ' s

    之所以選擇聲傳播時間的原因是：噪聲容限可以得到提高，並且傳播時間的計算可以不考慮聲壓的信息，從而降低了對環境模型失配的敏感性；相位的起伏也可通過到達包絡的群延時來消除；傳播時間是介質聲速分佈的偽線性函數並且傳播時間的起伏遠小於聲壓的起伏。
  17. Firstly, the differences between the ultra - wideband antenna and conventional wideband antenna are introduced in this thesis, and the definitions of several performance parameters of the ultra - wideband antenna are presented, among which the phase center and the group delay time are primarily discussed in that they describe the time domain properties of the antenna

    首先，簡要介紹了超寬帶天線與傳統超寬帶天線的區別，給出了超寬帶天線的性能參數在時域的描述方法。著重介紹了描述超寬帶天線時域特性的兩個參數，即相位中心和群延時。
  18. Employ ip address dynamically mapping method to implement single entry point. the implementation of single control point includes single monitor with pull model and single control with push model. then we put forward hierarchical control structure to implement single control point

    三、採用ip地址動態映射演算法實現單一入口點，減少了處理延時；單一控制點的實現分為單點監控和單點管理兩方面，分別採用pull模型和push模型；並在此基礎上，提出了層次控制結構，充分體現了集群之間的對等關系。
  19. For power control of listening users, forward power control method are introduced based on full, multichannel, filtered report, and collision method etc. the full report method has redundancy report information, and its real - time performance is bad, multichannel report is introduced to improve the real - time performance, and filtered report is introduced to eliminate the redundancy information, finally the collision method introduced can not only get higher real - time performance but also diminish the redundancy information ; 2. in order to meet the requirements of making the dynamic simulation of trunking group system, the ms ’ s random move equation is brought forward, the simulation of ms ’ s distribution is done and the integrated channel model are presented ; 3. the smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network, with this model, the power control ‘ s performance is greatly improved

    全匯報方法存在冗餘的匯報信息，而且實時性較差，為了改善實時性提出了多通道的匯報方式，為了改善冗餘匯報而提出了篩選法，最後介紹的碰撞法在減少冗餘信息的同時又提高了實時性;二、為了集群功率控制動態模擬的需要，提出了移動臺的隨機運動方程，進行了有關移動臺的分佈模擬，建立了綜合的通道模型;三、希望克服延時和跟蹤復雜網路環境變化，提出了功率控制的智能預測模型，通過智能預測模型可以改善功率控制的性能，著重介紹了採用神經網路的方法實現智能預測的通用模型，從而跟蹤復雜多變的無線環境，諸如慢衰落及快衰落（包括多徑衰落、多普勒效應所引起的衰落）等網路特徵，達到預測功率需求;四、採用二級正交碼和智能天線（空分多址）的方法進行組內用戶的識別，改進功率控制效果;五、話權用戶的前向和反向功率控制方法;六、對引入gota的cdma系統提出了復合容量表示方法，並作容量分析，探討有關gota系統的qos問題。
  20. On the above, to overcome the pre - maturity and low speed of search in the late phase of multicast routing algorithm based on genetic algorithm, the author gives the multi - population parallel annealing genetic multicast routing algorithm to solve the bandwidth, delay, delay jitter and packet loss constrained least - cost multicast routing problem, which combines the

    在此基礎上，將多種群并行技術和退火技術相結合，以克服現有基於遺傳演算法的組播路由演算法過早收斂和後期搜索速度較慢的缺陷，且使用樹狀編碼方法，提出求解帶寬、時延、時延抖動和分組丟失率約束的代價最小組播樹的多種群并行退火遺傳組播路由演算法。
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