種群波動 的英文怎麼說

中文拼音 [zhǒngqúnbōdòng]
種群波動 英文
population fluctuation
  • 種 : 種名詞（姓氏） a surname
  • 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
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  1. The perennial vegetation is expected to a. ordosica dominated and h. scoparium stably co - existed, together with an annual plant population of e. poaeoides and b. dasyphylla, which is greatly fluctuated with annual precipitation pattern

    其將與因年際間降水量及其分佈差異引起的種群密度等特徵波動的一年生草本小畫眉草和霧冰藜種群長期共存。
  2. The group velocity ( u ) corresponds to the net result from the addition of all elements with different periods and different velocities within the wave motion

    而群速度（ u ）符合於波動的不同周期，不同速度的各種因素疊加的凈結果。
  3. The group velocity(u) corresponds to the net result from the addition of all elements with different periods and different velocities within the wave motion.

    而群速度（U）符合於波動的不同周期，不同速度的各種因素疊加的凈結果。
  4. The density with the biodiversity increasing shows " m " model. ( 3 ) the correlation analysis shows : elevation, slope, development stage and biomass are main factors which affect the biodiversity pattern in the research region. the biodiversity of the quercus aliena var. acutesrata community shows the patterns with the elevation and slope affecting : on sunny slope, the species diversity increases with the elevation increasing below the attitude of 1640m and its climax is at this attitude ( the diversity index h = 1. 68 ), upward this point, the diversity index descends slowly. the evenness shows ascend trend with the elevation upward, its climax point at 1800m ( the evenness index jsw = 0. 78 ), then descending after this point

    （ 5 ）通過分析，銳齒棟群落生物量與生物多樣性呈現如下關系:在海拔1500一170枷范圍內，銳齒棟群落生物量與物種多樣性之間呈單峰曲線關系;在海拔1700一1900m范圍內，生物量與物種多樣性之間呈不明顯的波動關系;在海拔1900一2100m范圍內，生物量隨物種多樣性的增加而增大，通過對不同高程內生物量與物種多樣性分析發現，隨著海拔的上升，最大生物量對應的物種多樣性略有增加趨勢;在相同海拔和坡向條件下，生物量與物種多樣性之間也呈典型的單峰曲線關系;群落凈生產力與物種多樣性之間總體上也呈單峰曲線關系。
  5. It has been proven that the differences of magnitude and distribution of tidal currents, wave energy rate, suspended sediment concentration and the stokes number result in a asymmetrical distribution of sandbanks between the north and south. the sandbank surface area and length in the north are lager than those in the south, but its cross section area is less than that in the north

    各種動力特徵平面分佈規律研究表明，輻射沙脊群南北沙脊不對稱分佈的格局是潮流沙脊對潮流往復流性質的強弱分佈、潮波能流率大小分佈、含沙量的平面分佈規律及斯托克斯數的大小分佈的動力響應。
  6. Population dynamics the study of the factors influencing the fluctuations in numbers in a population or of its gene pool : the factors affecting birth and morality rates, immigration and emigration, and reproductive potential ( for example, seed size, dispersal, and dormancy )

    種群動態：主要研究影響種群及其基因庫數量波動因素：這些因素影響種群內出生率、死亡率、遷入及遷出、生殖潛力（如種子的大小、傳播以及休眠） 。
  7. The death rate of individuals in beiwenquan population is fairly higher initially and stable afterwards, while after 10 years, the death rate has appeared several waves, and then achieved the biggest physiological life span at 13 years with the death rate sharply up

    北溫泉種群的死亡率在幼苗時比較高，以後比較穩定，到10齡時開始下降，以後出現幾次波動，個體在13齡時達到種群的最大生理壽命，死亡率急劇升高並最終消失。
  8. Botswana offers arguable the greatest variety of flora, fauna and natural highlights

    波札那擁有種類繁多的動植物種群和豐富稀有的自然資源。
  9. We conclude that marine biodiversity loss is increasingly impairing the ocean ' s capacity to provide food, maintain water quality, and recover from perturbations

    我們認為海洋生物多樣性的喪失正在不斷削弱海洋具有的各種功能，如提供食物、凈化水質、平衡種群波動。
  10. Firstly, the paper, combining the characteristic of synchronous pulse bursts and inhibition with the modified pcnn model, presents a way of finding the foveation points in the images adaptively and effectively, and simulates the human vision system. secondly, pcnn is extended to pcnns, based on the properties of information couple and transmission, an algorithm that is used to fuse images of the same target got by several sensors to an image is presented to simulate the human vision system. thirdly, combining the properties of synchronous pulse bursts, capture, and transmission and competition of waves, the paper presents two ways of classification, one is an algorithm based on the properties of neuron to capture and inhibit to classify the data taking on any complex unlinear distribution robustly, the other is based on the restricted distance and modified of the former to remove the influence of inferior samples in classification ; fin ally, based on the accumulative difference pictures, and the forming and transmission of pcnn wave, selecting and controlling the direction of autowave by connecting the neighbouring neurons selectively, the paper presents a way to simulate the tracks of moving object and detect the moving direction

    首先結合pcnn的同步脈沖發放和側抑制特性，提出了基於改進型pcnn的圖像凹點檢測演算法，該演算法是一種自適應而有效的圖像凹點檢測方法，並且較好地模擬了人類視覺系統；然後，結合信息傳遞和信息耦合特性，將pcnn擴展成pcnns （ pcnn網路群） ，提出了一種基於pcnns的圖像融合演算法，能夠將多個傳感器獲取的同一目標的圖像信息融合到一幅圖像中，有效模擬了人類視覺系統；另外，結合pcnn的同步脈沖發放特性、捕獲特性和波的傳播競爭特性，開拓地將pcnn用於模式分類中，提出了基於耦合神經元點火捕獲抑制特性的分類方法和改進的約束距離下的pcnn分類方法，前者可實現對樣本空間中任意復雜分佈訓練樣本的穩健非線性分類，而後者能夠消除訓練樣本中刺點對分類的影響；最後，結合累積差分圖像思想、 pcnn波的形成與傳播特性，通過各神經元之間連接取向來選擇與控制自動波的流向，將pcnn用於運動視覺分析中的運動軌跡模擬及運動方向檢測。
  11. At the cites meeting in kenya in april 2000, one of the high profile issues was the proposed downlisting, from appendix i to ii of south africa s population of african elephants to allow annual sales of ivory stocks, and proposals to resume ivory trade and trade in elephant hides and leather goods from botswana, namibia, zimbabwe to japan

    2000年4月在肯尼亞舉行的瀕危野生動植物種國際貿易公約締約國會議，其中一項引起廣泛關注的議題是把南非的非洲象種群由附錄一改為列入附錄二，以準許象牙年銷另外有建議恢復象牙貿易及準許波札那納米比亞及辛巴威輸出象皮及象革產品往日本。
  12. This paper analyzed the noniinear, non - - equilibrium, fractai and chaos characteristics of chinese stock market, identified, estimated and tested three fractionaliy integrated time series models the first chapter " introduction to the evoiution of stock market investment theory " summarized the nine important representative theories of different stage, summed up the trend of the development that the stock market investment theory is evotving from static portfplio theory to dynamic time series modei, from univariate modei to muitivariate modei, from linear modei to nonlinear complicated model and from traditional modei to fractai modei, paved the way for following discussion

    實際情況卻是股票市場影響因素以及各因素之間相互作用關系復雜，受投資者個人及群體心理因素影響明顯，股票的波動以及收益與風險的關系常常是非線性的，非均衡的，收益的方差和均值是自相關的、不穩定的，收益的波動符合分形布朗運動，表現出分形和混沌的特徵。本文分析了股票市場的波動的非線性、非均衡、分形和混沌特徵，建立並檢驗了幾種股票的分形差分異方差時間序列模型。
  13. For multi - granularity application, both a lambda - group model used in traffic grooming and a new intelligent switching fabric based on the new model were presented. the optical switching fabric presented a distinctive approach of dividing granularities into specific tunnels for effective optical treatment. in addition, two key dynamic algorithm modules of configuration for granularity separation in the control layer were discussed. simulation results show that the method of particular channel partition can greatly improve the average channel quality and the blocking performance along every optical path for dynamic connection requests

    針對多粒度應用，開發了一種用於流量疏導的波群模型，並引入一種基於此模型的新型智能交換結構.該光交換結構提供了獨特的區分粒度到相應隧道進行有效處理的方法.此外，還討論了控制層粒度分離時採用的兩個關鍵的動態演算法模塊.模擬結果顯示這種特殊的通道分離方法有效提高了處理動態連接請求時每個光路徑的平均信號通道質量和阻塞性能
  14. Toomany to list, and many that would be nearly impossible to describe withwords, but a few include : explosions, fire, smoke, fog, waterfalls, sparks, sparkles, fireworks, rain, snow, puddle splashes, motiongraphics backgrounds, magic effects, space warps, abstract lights, lava, flocks of birds, geometric shapes, aurora, bubbles, waves, rainbows, light beams - - dozens of different types, and hundreds ofvariations

    太多的名單，許多人表示，將幾乎無法描述文字，但有幾個國家包括：爆炸，火，煙，霧，瀑布，火花，火花，煙花爆竹，雨，雪，頂燈開復，運動圖形背景，魔術的影響，空間扭曲，抽象燈，熔巖，成群的鳥，幾何形狀，極光，泡，波浪，彩虹，光束-幾十種不同類型，數百變化。
  15. Explore the auto consumption current, influencial factors, automobile consumption ’ s stimulation economic growth, and how to promote car consumption and stimulate economic growth is the subject of this study. first, the paper discusses background, aim and meaning of the research, and summarizes the thesis theme, technical route method and main content. second, the paper analyzes the comsumption theories and economic growth theories and discusses the relation between the auto consunption and economic growth from the marxist economics, classic economics, system economics, industry economics, innovation economics etc. the theoretical foundation of this dissertationis the marxism consumption, the kennis ’ s absolute income theory, freedman ’ s long income suppose theory ect

    本項研究採用理論與實踐相結合的方法，對汽車消費與經濟增長的關系進行了經濟學分析，探索了汽車消費拉動經濟增長的理論基礎;通過對波特價值鏈理論和產業集群理論研究，分析了汽車消費關聯效應的理論基礎;分析了我國汽車消費和汽車消費市場的現狀，並對汽車消費進行了國際比較，指出了汽車消費的變化趨勢;對影響汽車消費的各種要素作了系統的分析，明確了各種影響因素的現狀和發展趨勢以及它們對汽車消費趨勢的影響;為了揭示汽車消費與經濟增長的關系，首先進行了汽車消費對汽車產業以及關聯產業的拉動作用的分析，並運用主成分分析方法和多元統計分析方法，分別就我國汽車消費對經濟增長的拉動作用和吉林省汽車消費對經濟增長的拉動作用進行實證分析，總結了汽車消費對關聯產業和經濟增長的具體影響;提出促進汽車消費、拉動經濟增長的對策與建議，並指出了應進一步研究的領域。
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