穩定的種群 的英文怎麼說

中文拼音 [wěndìngdezhǒngqún]
穩定的種群 英文
balanced population
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 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...
  • 的 : 4次方是 The fourth power of 2 is direction
  • 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
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. The reproductive characteristics and population structure of artemisia ordosica, hedysantm scoparium, caragana korshinskii and the reproductive characteristics of annual plants eragrostis poaeoides and bassia dasyphylla were observed in shapotou artificial revegetation area. stability of the artificial vegetation was appraised from the views of its persistence and variability under local natural condition. the study showed that : the artificial - natural vegetation built with sandbreaks and plants is stable in shapotou area

    通過對沙坡頭人工固沙植被區主要建植種群檸條（ caraganakorshinskii ） 、花棒（ hedysarumscoparium ）和油蒿（ artemisiaordosica ）的繁殖特性及種群結構的研究，以及自然侵入的一年生草本植物小畫眉草（ eragrostispoaeoides ）和霧冰藜（ bassiadasyphylla ）繁殖特性的研究，探討了在植被的持久性和變異性，分析評價了主要受惡劣環境壓力下的人工固沙區植被的穩定性。
  2. It has reached to the point where the various features of group psychology are being studied, the aim of which is to effectively organize and control group activities so as to maintain social stability and promote economic development

    一百年來，該學科經歷了五個發展階段，目前的研究正深入群體心態所具有的種種機制，目的是為了有效組織並引導群體行為，促進經濟社會的穩定發展。
  3. In nature conditions, without the injection of the extraneous hormone, the females and males of f _ 9 - f _ 12 could mate each other to produce new next generation of tetraploids. with the stable genetic tetraploidy and the fertility in the nature environments, this allotetraploid population possessed the key factors to form a new species with 200 chromosomes

    F _ 9 ? f _ （ 12 ）染色體數目的穩定性和正常的性腺結構以及自然條件下的生殖傳代行為，說明該異源四倍體鯽鯉已成為一個染色體數目為4n = 200 、遺傳性狀穩定的新型四倍體魚群體，具備形成一個新的種群所需的關鍵因素。
  4. In the light of the recent work in biological models, especially in the chemostat models, the dissertation provides a systematic study on the asymptotical behaviour of some chemostat models built by delay or diffusion differential equations. the main contents and results in this dissertation are as follows : i ) the global asymptotic behavior of the chemostat model with the beddington - deangelies functional responses and time delays is studied. the conditions for the uniform persistence of the competing populations are obtained via uniform persistence of infinite dimensional systems

    本論文基於當前生物學模型，特別是恆化器模型的研究現狀，深入系統的研究了時滯和擴散方程描述的幾類恆化器系統的漸近性態，本文的主要內容包括以下幾個方面：一、研究了具有beddington - deangelies功能性反應函數的時滯恆化器模型，利用無窮維連續動力系統的一致持續生存的理論給出了兩競爭種群一致持續生存的充分條件，利用單調動力學系統得到了系統的全局漸近穩定性。
  5. Results demonstrate that with the succession going on from herbosa shrubs coniferous forest theropencedrymion evergreen broad - leaved forest, abundance and diversity index of species, biomass and productivity of vegetation all show a rising trend prior to the formation of a mature and stable biotic climax

    結果表明：隨著草叢灌叢針葉林針闊混交林次生常綠闊葉林正向演替的進行，在未形成成熟而穩定的頂極群落之前，物種豐富度、物種多樣性指數、植被生物量及生產力都呈增大趨勢。
  6. From outside, the 2, 711 dark gray slabs form a gentle wave, ankle - high in some places, designed to give visitors a sense of instability, a loss of orientation

    從外觀來看，紀念碑群由2711根長短不一的灰色碑柱組成，從遠處望去，黑灰色的石碑如同一片波濤起伏的石林，讓遊客不由自主產生一種不穩定的、迷失方向的感覺。
  7. The wusuli river group has its stationery tour route, the spawning population wing up heilongjiang river and swims into wusuli river in early may when ice has melt, reproduces during mid june to july in middle part of wusuli river

    烏蘇里江種群在烏蘇里江有較穩定的洄遊路線，產卵群體自5月初解凍后，沿黑龍江上溯，進入烏蘇里江並沿江上溯， 6月中旬至7月初在烏蘇里江中游產卵。
  8. Thinning stands with the thinning intensity of about 20 % and 30 % had no significant effects on species diversity, biomass of shrub and herb, and physical properties of soil

    各林分的樹種組成在12年間基本沒有發生變化，即間伐沒有顯著地改變林分的樹種組成，目前的樹種組成即落葉松、其他針葉樹（雲杉、冷杉和紅松）和闊葉樹組成比約為6 : 3 : 1可能是相對穩定的群落。
  9. It was found that high transplantation efficiency and stable production can be achieved by improving egg fertilization, and egg stocking pattern, by high density of fertilized eggs, and by fertilization and feeding

    結果表明，通過控制受精卵的質量，選擇適宜的投卵方式，保持比較高的受精卵投放密度，並在形成較大種群時進行施肥，增加餌料生物量等方法，可提高移植增殖效果，獲得持續穩定的高產。
  10. The growth of the both species is of logistic naluf. the mature species - y preys on the mature - x. by using the lyapunov function we obtain the - conditions for globally asymptotic stablility of positive equilibria without harvesting. conditions for global asymptotic stablility of four positive equilibria with harvesting and the threhold of hai vi - sting mature population

    但從目前已知的文獻來看，對于兩個種群同時具有年齡階段結構，且同時對兩個種群進行開發的結果較少，本文通過構逅lyapunov函數，得到了當捕獲率不為零時上述模型存在一個全局漸近穩定的正平衡點的充分條件，也就是說，在一定條件下，種群兄。
  11. Therefore, the purpose of this paper is that, supporting vulnerable groups should be a long, stable and lasting course. as to the government, it need to make a policy system which supports the vulnerable groups constantly and legally. the government should use such policy as finance, tax, transfer payments, and so on, in order that the vulnerable groups could break away from the vulnerable state as soon as possible, so as to clears the obstacle of our magnificent goal

    因此，本文認為，扶持弱勢群體應當是一個長期的、穩定的、持續的過程，非朝夕之間就能夠完成的，就政府而言，需要制定並不斷完善扶持弱勢群體的政策體系並使之制度化、法律化，長期穩定下來，充分運用包括財政、稅收、轉移支付以及補貼等多種政策手段，為扶持弱勢群體早日擺脫弱勢狀態發揮應盡的職責，從而為順利實現全面建設小康社會的宏偉目標掃清障礙。
  12. Each chapter of the paper reads as follows. firstly, the uniform persistence of the system is proved ; secondly, by using the independent subsystem method, the more brief sufficient conditions for the existence and global attractivity of the periodic solution and a mathematical example is obtained to show its practicality. finally, the conditions of the existence of the positive almost periodic solution which is uniformly asymptotically stable are derived by the razumikhin function method and a mathematical example is obtained

    在本文中，首先對于這兩類模型，分別考慮各種群的一致持久性；通過對獨立子系統的討論得到了，當系統是周期系統時，周期正解的存在唯一和全局吸引性，當系統是概周期系統時，正概周期解的存在性和一致漸近穩定的條件，並對上述兩種情況分別給出了說明其可行性的數學例子。
  13. The character of the colonies is important for special species. the results show that the characters of conidia shape and color are very important, the steady number of distosepta and the size of conidia are important too. otherwise, the special hosts corresponding to the species help us identify these species

    以分生抱子的形態特徵為主，菌落特證僅對特殊的種有參考價值：以分生袍于的假隔膜數的差異分成大的類群，分生泡于的顏色、形狀是主要的分類依據：形狀相似時，長、寬作為區分的參考；此外，有些種具穩定的寄主，寄主也可作為鑒定的重要參考依據。
  14. The result shows as the followings : 1. the age structure of the three populations is basically a bell - shaped one. the seedlings in each population are relatively rich

    本研究的主要結果如下： 1 、縉雲衛矛三個種群的年齡結構基本上呈鐘型，幼苗數量均比較豐富，屬于穩定型的種群。
  15. There are documents that showed two instable patches can reach stability by diffusion. delay is generally exists in the nature. and it has different impacts on different models. while both delay and diffusion exist at the same time. so single species nonautonomous delay diffusion model. i. e

    已有文獻表明兩個不穩定的斑塊體系可以通過相互擴散而達到種群的持續生存。另一方面，時滯現象在自然界中是普遍存在的對于不同的模型，時滯對其穩定性的影響也是不同的。
  16. 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。
  17. The niche breadths of same plants vary greatly among different communities and the competitive relations of the plant species in different communities vary depending on the combined actions of the niches of the species, stable landforms and soil conditions, and annual rainfall fluctuations

    同一種植物在不同群落中的生態位寬度變幅較大，不同群落內部植物種競爭關系的差異是由物種的生態位和由相對穩定的地貌、土壤條件以及隨年際變動的降水條件共同作用的結果。
  18. Conditions for global attractivity of multispecies ecological competition - predator system with holling type functional response

    類功能性反應的多種群競爭捕食系統全局穩定的條件
  19. Prototype experiments on an 40 - node linux cluster show the this scheduling schemes outperform the popular load balance approach by cutting the average response time, with only little trade - off in overall throughput. further experiment on larger number of sensors demonstrates the cluster server maintain the optimized performance under high intensity workload. in our next phase of work, is focus on the linux kernel

    隨后的大傳感器數量實驗和高強度主動型全分散式調度策略實驗證實了主動型全分散式調度策略演算法在高負載下優異的實時響應特性和穩定的系統產出率，表現出這種新演算法在支持大型集群體系，提高系統擴展性上的巨大潛力。
  20. We only required that r2 ( t ) is nonnegative and loosen the requests of the functions r1 ( t ) and r ( t ). we will get some new criteria of the uniform persistence, extinction and attractivity for the above system. since the narrate of the main theorem is long, we omit it

    本文用一種新的方法，在僅僅要求r _ 2 （ t ）非負的條件下，放寬了對r _ 1 （ t ） ， r _ 3 （ t ）的要求，得到了它的種群一致持久、滅絕和全局漸近穩定的新的判別準則。
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