新種群 的英文怎麼說

中文拼音 [xīnzhǒngqún]
新種群 英文
cenospecies
  • 新 : Ⅰ形容詞1 （剛出現的或剛經驗到的） new; fresh; novel; up to date 2 （沒有用過的） unused; new 3 （...
  • 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
  1. It permits a population to spread as the population increases, and it enables the colonization of new sites.

    它使得種群在其增長的時候得以擴展它的分佈區域並移居到新的場所。
  2. A breeding programme must provide for a continual infusion of new genetic material into the population to avoid in-breeding.

    一項育種計劃，必須為把新的遺傳種質不斷地滲進育種種群提供條件，以避免近交。
  3. Pollination phenology and an indirect estimate of gene flow in natural populations of psathyrostachys huashanica

    華山新麥草開花物候期觀測和自然種群基因流的間接估測
  4. Introduction of prepotency operator in the initialize population step and the improved mutation operator accelerate the convergence process, and the introduction of new operator in forming new population step avoid converging in local optimum, and promote the ability of global convergence

    演算法在初始化種群階段引入了「優生」運算元，以及改進的變異操作使演算法的收斂速度大大提高；在形成新種群階段引入新的運算元避免了局部早熟，提高了全局收斂能力。
  5. 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。
  6. On the process of modernization in china, a new class, so - called middle class, gradually comes into being from the former social structure and seeks for culture belongingness to enter into a original being immediately

    中國現代化進程中，逐漸分離出一種新型群體? ?中產階層。由於她們剛從舊的組織模式脫離，被納入新的存在形式，急需要尋找自己的文化歸屬。
  7. The theoretical analysis shows that any human activities, responsible for the changes of rock, air, water, soil and biology inside or outside the caves, will influence inevitably cave animals in terms of such levels as molecule, cell organelle, cell, tissue, organ, system, individual, population, society and ecosystem. these effects can be observed on cave animal ' s shape - building, activity, tissue structure, metabolism, space - time distribution, biothythm, structure of population and society, food chain, bio - relation, diversity of population and society, and function of the above - mentioned levels

    理論分析表明，凡是能夠引起地表和洞穴巖石、空氣、水、土壤、生物等變化的一切人類活動都不可避免地使洞穴動物在分子、細胞器、細胞、組織、器官、系統、個體、種群、群落和生態系統各級層次上產生效應，這些效應具體表現在影響洞穴動物形態建成、行為、組織結構、新陳代謝、時空分佈、生物節律、種群和群落結構、食物鏈結構、生物關系、種群和群落多樣性以及各層次所表現的功能的多少、快慢、強弱等方面。
  8. Particle swarm optimization ( pso ) is inspired by social behavior of bird flocking or fish schooling. it is a population - based, self - adaptive search optimization technique. pso is simple in concept, few in parameters, and easy in implementation

    粒子群優化演算法（ particleswarmoptimization ， pso演算法）源於鳥群和魚群群體運動行為的研究，是一種基於種群搜索策略的自適應隨機演算法，是進化計算領域中的一個新的分支。
  9. Here we report that the genetic identification of h9n2 influenza viruses from those newly forming poultry in this region, partridge and chukka. our results suggest that those h9n2 influenza viruses isolated from these types of terrestrial poultry are not sorted into the following two genotypes, i. e., qa / hk / gl / 97 - like and dk / hk / y280 / 97 - like virus lineages. genetic analysis revealed that some of them are reassortment viruses between above two lineages

    結果表明， h9n2亞型流感病毒在這些新種群中廣泛流行，並且檢測到多個基因型的存在，進化樹分析證實有多個基因型與同期在水禽類中分離到的基因型相近：這表明h9n2亞型流感病毒很可能通過發生跨種屬傳遞從水禽感染這些小種群陸基禽類。
  10. The individuals of neolitsea aurata var. glauca in gaps showed clumped distribution

    林隙內白毛新木姜子種群為集群分佈。
  11. The information generated in current study suggests that the developing influenza ecosystem in southern china region may play an important role in the process of emerging novel influenza viruses, even directly impact the genesis of pandemic influenza strains. materials and methods : fecal, cloacal and tracheal swabs from different types of poultry were collected in live - bird retail markets once a week. they were inoculated into 9 - 11 days embryonated chicken eggs and incubated in 35 for 72 hours

    本課題意在: 1 、以pa和cu為代表，探討hgnz亞型流感病毒在這些新形成的小種群中的流行情況; 2 、探討這些小種群中流感病毒的來源:是從其它動物跨種屬傳遞而來，還是本身為流感病毒的天然宿主: 3 、探討這些新形成種群中hgnz亞型流感病毒的進化情況，以及其在整個流感病毒生態體系中的作用;材料和方法:每周採集標本一次，常規處理后，接種於9一n日齡雞胚尿囊腔， 35恆溫培養72小時，收取雞胚尿囊液。
  12. The mechanism about seed actual reproduction and artificial restoration under disturbance was investigated by using systematic sampling in the typical area of reaumuria soongorica population at mid - young age in desert grassland region, according to two similar habitate involved five different disturbance characteristics

    摘要2003年7 10月，選擇黃土丘陵區荒漠草原地帶兩個相似生境、 5個不同干擾特徵的中幼齡紅砂種群更新恢復類型區為研究物件，採用系統取樣法或樣行法，開展了干擾條件下的紅砂種群種子更新與恢復機理的初步研究。
  13. The results showed that the capability of reaumuria soongorica in seed actual reproduction and artificial restoration was positively correlated with disturbance levels ; the capability of restoration varied with the characteristics of disturbance factors, of which water was the key factor

    結果表明，紅砂種子更新恢復能力與干擾水準呈正相關；干擾因數的特徵不同，則更新恢復能力不同；尤其水分因數參與對紅砂種群的自然更新與人工輔助恢復起著關鍵性的作用。
  14. The paper summarizes the latest research advances in chimonanthus praecox ( l. ) link community ecology in terms of community distribution and environment, flora composition, appearance and structure, population structure, and physiological and ecological factors, points out some currently - existing research problems, and puts forwards some research priorities and orientations

    摘要本文從群落分佈與群落環境，區系組成、外貌和結構，種群結構及生理生態學等方面綜述了蠟梅群落生態學研究的最新進展，指出了現今研究中存在的一些問題，提出了今後研究的若干重點領域和方向。
  15. Recently years, there is a new optimization method named genetic algorithms ( ga ) which is based on the numbers of genus groups. this method is a kind of random searching method which simulated natural selection and evolution. compared with traditional optimization method, genetic algorithms has two notable characters. one character is latent parallel and the other is seaching in the whole area. and genetic algorithms has some advantage which traditional method do n ' t have, for example, in genetic algorithms we did n ' t need the calculation of grade

    遺傳演算法[ geneticalgorithms ，簡稱ga ]是近些年來出現的一種模仿自然選擇與進化的基於種群數目的隨機搜索演算法，是優化領域的一個新成員。與常規優化演算法相比，遺傳演算法具有隱含并行性和全局搜索特性這兩大顯著特徵，並具有一些常規優化演算法所無法擁有的優點，如不需梯度運算等。
  16. Dna shows that ancestors of the desert locust flew across the atlantic and gave rise to a diverse group of new world species

    研究人員表示，這些蝗蟲的dna證據顯示，非洲沙漠蝗的祖先們曾飛越了大西洋，並在美洲大陸生成了一個新的蝗蟲種群。
  17. Research findings from recent surveys of the pearl river estuary indicate that hong kong and guangdong waters share the same population of chinese white dolphin

    根據最新的珠江三角洲研究結果顯示，在香港與廣東省水域出沒的中華白海豚屬同一種群。
  18. A new genetic algorithm based on diffluent mechanism ( dmga ) is put forward. its strategy is that excellent seeds are set limit to reproduce, certified seeds are crossed and bad seeds are mutated. the crossover probability and mutation probability is adjusted by the evolutionary equality

    提出一種基於分流機制的新型遺傳演算法（ dmga ） ，該方法採用優種限量繁殖，達標種交叉和劣種變異的策略，交叉和變異概率根據進化質量自適應地調整，使種群具有很強的可進化性。
  19. At present, h9n2 subtype influenza viruses are prevalent in terrestrial poultry worldwide. what is more, the introduction of these new types of terrestrial poultry was in southern china, a hypothetical epicenter for the emergence of pandemic influenza viruses. it is, therefore, more important to carry out influenza surveillance, especially in those newly forming poultry in this region

    目前h9n2亞型流感病毒分佈廣泛，多次發生傳染人的事件，加上華南地區作為理論中「流感中心」的特殊地位，因此對該地區進行嚴密的流感病毒監測具有重要的意義，特別是對近年來該地區不斷涌現的新種群中流感病毒進行檢測。
  20. The main research work of dissertation can be concluded as follows : 1. two kinds of hybrid strategies of genetic algorithms and tabu search are discussed systematically in this paper. the idea of tabu search is introduced to improve crossover operator and mutation operator of genetic algorithms for the first strategy, while tabu search is executed to a certain proportional selected individuals in the population after genetic evolution of every generation for the second strategy

    本文的主要研究成果概括如下: 1 .論文比較系統地探討了遺傳演算法和禁忌搜索演算法的兩種混合策略:第一種是利用禁忌搜索的思想來改進遺傳演算法的交叉運算元和變異運算元;第二種是對每代中交叉變異后得到的新種群中的一定比例的個體進行禁忌搜索處理。
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