種群當量 的英文怎麼說

中文拼音 [zhǒngqúndāngliáng]
種群當量 英文
population equivalent
  • 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
  • 當 : 當Ⅰ形容詞（相稱） equal Ⅱ動詞1 （擔任; 充當） work as; serve as; be 2 （承當; 承受） bear; accept...
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  1. Under mixed culturing conditions, it was observed that bacterial number rapidly incre ; ised soon after the lysing of host cells. on the contrary, while the non - host cyanobacterium ( i. e. anabaena flos - aquae ) was incubated in the mix culturing system, the breeding of the bacteria could be inhibited. it may be suggested from the result above that cyanophage could bring about the changes in microorganism populations

    調查結果顯示， 19個採集的水樣中有6個含有裂解織線藻的噬藻體，而且水樣未經濃縮即能裂解宿主，說明噬藻體在淡水中分佈較廣泛，裂解性也較強；混合培養條件下的研究結果表明，噬藻體裂解宿主后，細菌數量快速增加，而當培養系統中有非宿主藻類存在時，細菌的增殖則受到非宿主藻的抑制，說明噬藻體可以顯著改變系統中微生物的種群結構。
  2. R. yushensis is an aquatic plant in the lake of zhangcun at that time and indicates a brackish, clear, tranquil and shallow lake in this region in late pliocene. the smooth endocarp surface further suggests a warm temperate or temperate palaeoclimate

    榆社川蔓藻果實和種子的大量出現說明該植物可能在該水域形成了單一的優勢類群，其光滑的內果皮表面指示當時當地為暖溫帶或溫帶氣候。
  3. When the wolves were extirpated in the park as a menace, elk numbers soared, and the hordes consumed the vegetation, denuding the lamar valley and driving out many other species

    當公園里的狼群被視為威脅而遭到消滅，麋鹿的數量便開始竄升，成群的麋鹿大啖植被，剝光拉馬河谷，將許多物種驅逐出境。
  4. The killing effect on oncomelania hupensis by lixivium of pterocarya stenoptera, nerium indicum, rumex japonicus and their mixture was studied. differences of the snails mortality were studied also. the three kinds of plant material could kill the snail effectively both in spring and in autumn. but the mortality was different when the experiment is done in different seasons or with different lixivium. the effect in spring was better than that in autumn. n. indicum was the most effective among the three kinds. the effect by mixture was better than that by unitary material, and the effect by the mixture of the three kinds was better than that by two kinds. the variance analyses showed that the experiment could be modified, and some ingredients concentration in mixed lixivium could be reduced. the experiment was valuable in enhancing the power of killing the snail and saving plant material

    對楓楊、夾竹桃和土大黃以及它們的組合水浸液的滅螺效果作了比較研究，結果表明: （ 1 ）滅螺效果均隨水浸液濃度的增高而增強; （ 2 ）這3種植物材料及其組合水浸液的滅螺效果都是春季比秋季好; （ 3 ）組合水浸液的滅螺效果比單一植物材料水浸液的滅螺效果好; （ 4 ）方差分析的結果說明植物材料組合水浸液滅螺在保證滅螺效果的前提下，還可以適當降低組合水浸液中的濃度.以上結論對提高植物材料的滅螺效率和節省植物材料的使用量有著重要的意義，同時也為組建植物滅螺群落提供了有益的參考
  5. In a straight fight, therefore, it was the drug - sensitive strain that had the selective advantage when faced with a two - pronged attack

    這場直接的菌群較量說明了當面對兩種進攻的時候，敏感菌有優勢。
  6. Coastal communities in developing countries use them as a source of food and our fishing and eco - tourism industry ultimately depends on healthy marine turtle populations

    在發展中國家的沿海居民把海龜當食物，同時我們的漁業和生態旅遊工業終將依賴于大量的海龜種群。
  7. Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements

    利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大
  8. Studies on population ecology showed that d. versipellis is able to grow on the hillsides of subtropical broadleaf or acicularleaf secondary forest where soil is fertile and the content of n, p, k is high and the ph is 5. 49 - 6. 59

    種群生態研究表明八角蓮適宜生長的土壤為中性偏酸（ ph5 . 49 6 . 59 ） 、有機質含量為7 . 34 33 . 33和n 、 p 、 k養分含量高的黃棕壤；其生長環境的植被為亞熱帶針葉混交林，伴生植物多為當地優勢種。
  9. Longgang nature reserve plays an important role in preserving two langur species of both white - headed langur and francois langur. interview and field survey methods were used to survey the distribution and population size of these two langurs in this natural reserve from december 2001 to january 2002. the result indicated that the reserve has 8 groups of white - headed langur with 68 individuals in longrui and 10 groups of francois langur with 75 individuals in longgang. the distribution area and population size of both of the two langurs in this reserve have greatly declined in the past decades. they are seriously threatened and have high risk of disappearance from this reserve if no effective measures are to be taken at once

    為了確定弄崗自然保護區內白頭葉猴的種群數量，彌補黑葉猴種群數量的空白，掌握此保護區葉猴的生存現狀，採用訪問法和實地數量統計法相結合的方法對弄崗自然保護區的弄崗、隴瑞和弄呼3個部分進行深入的調查研究.調查結果表明，在隴瑞片范圍內，共有8群白頭葉猴，種群大小在68隻左右，和20世紀80年代末的244隻相比，數量下降相當驚人;在弄崗片內，共記錄到黑葉猴群10群，最大的種群為11隻個體，最小的種群是4隻個體，共計約有75隻黑葉猴（絕對數量統計） ;弄呼的黑葉猴種群已經于上個世紀的晚期消失.造成目前狀況的因素主要是過度狩獵和其他形式的過度干擾.弄崗自然保護區的葉猴種群數量已經接近可持續繁殖種群的最低水平，如不採取有效的保護措施，這個種群將很可能在短期內消失
  10. Exploitation and reducing mangrove area at dongyu mangrove area had changed population size of birds, community - structure and species diversity

    廈門東嶼紅樹林區的開發建設和紅樹林破壞引起當地鳥類物種數、數量、群落結構及物種多樣性的變化。
  11. N sources ( including organic and inorganic n tested ) and c sources tested could restrain methane oxidation. cellulose inhibited methane oxidation most weakly while the high concentration of methanol and glucose did dramatically, but the proper concentration of methanol could stimulate soil methane oxidation sharply. in the middle process of methane oxidation, addition of glucose could restrain methane oxidation shortly but the inhibition could be relieved about 5 days later when supplied again with enough oxygen

    土壤微生物是甲烷氧化的主要生物類群，含水量對土壤甲烷氧化活性有明顯影響，過高或過低對甲烷氧化均具有抑制作用；氮源（包括有機和無機氮源）對甲烷氧化均有抑制作用；不同碳源對甲烷氧化的影響各異，纖維素對甲烷氧化抑制作用最小，而高濃度的甲醇、葡萄糖則對甲烷氧化具有強烈抑制作用；而適當濃度的甲醇可極大促進土壤對甲烷的氧化：在甲烷氧化過程中加入葡萄糖能迅速抑制甲烷氧化；在加入葡萄糖的同時保持瓶中充足的氧氣，則這種抑制作用可以在重新培養一定時間后得到解除。
  12. This paper is carrying out based on the chemical materials of huanhe group of cretaceous system of erdos basin, carrying on relativity analysis about tds and three major anion percentage of meq ( milligram equivalent ), taking cluster analyses on tds and the three anion percentage of meq, the trend analysis of the percentage of the number of fresh water and the total water with the increases of anion percentage of meq, classifies the new index, divide the groundwater into three kinds according to percentage of meq of three major anion finally defining new groundwater water chemistry : definitely bicarbonate type, relativity bicarbonate type and non - bicarbonate types, point out that the possibilities of fresh water reduce in proper order of these kinds

    鄂爾多斯地下水勘查是國家重大的地質調查項目，在地下水水化學研究的幾次大型討論會議上，專家們一致認識到，能不能利用鄂爾多斯盆地地下水勘查項目中的大量地下水水質分析資料，探索出一種新的水化學類型劃分方法，對舒卡列夫分類中的25毫克當量百分數的分類界限加以重新考慮，而找出一個與淡水密切相關的x作為分類界限。本文就是以鄂爾多斯自流水盆地白堊系保安群環河組地下水水化學資料為基礎而開展相關研究的。
  13. This paper sets up a predator prey system with diffusion on two patches ; the main study is how diffusion affects the three populations ' existence when one of the two patches is polluted

    摘要建立了2個斑塊上種群擴散的食餌捕食系統，主要研究了當其中一個斑塊受到輸入量存在極限值的外來毒素污染時，擴散對2個斑塊上3個種群生存的影響。
  14. Since their humble origins in the belgian children ' s comic - strip magazine spirou, the smurfs have sold 25 million cartoon albums worldwide in 25 languages

    當年「藍精靈」首次登上比利時《斯皮魯》兒童漫畫雜志時還是群不起眼的「小傢伙」 ，但自它們面世以來， 《藍精靈》動畫片在全球的銷量達到2500萬張，並以25種語言發行。
  15. The trade is large enough to threaten wild populations, causing declines in number and in size of seahorses

    由於貿易量相當大，足以威脅野生種群，導致海馬數目及體積日漸下降。
  16. Rtt relation generaliazes a lot of commrtation and it is a theoretic frame which limits complete integrable system. giving ( ? ) ( u ) as ybe ' s solrtion, theories about quantum groups which include yan - gian and quantum algebras can be derived from rtt relation

    Rtt關系是一個概括了許多已知對易關系的，具有更廣泛的形式的對易關系，它是一種限制完全可積系統的理論框架。當楊一巴克斯特方程的解r （ u ）給定時，由rtt關系即可建立量子群理論，它包括yangian和量子代數。
  17. The family business has been regarded as the earliest form of enterprise in the commodity production - the earliest family business came into being at the age of the british industrial revolution in the 18th century - the one with the largest amount, the most complex internal structure and relation, and the greatest difference in scope among the groups of contemporary enterprises as well

    家族企業是商品生產中出現的最早的企業形式? ?最早的家族企業始於18世紀英國工業革命時代? ?也是當代企業群體中數量最為龐大、內部結構與關系最為復雜、規模差異最大的一種企業形態。
  18. The best search direction was decided by the new swarm which was built by the best individual of each chromosome

    通過搜索各種群中各染色體的最優個體，組成一個新的種群，並以此種群作為當前最優種群來確定量子門的全局最優搜索方向。
  19. The parameter can be adjusted adaptively by incorporating population entropy into the algorithm to provide a quantitative measure of population diversity of individuals in the population and new individuals can be introduced into the population by a big - mutation operation when the individuals in the population tend to be consistent. the case study shows that the algorithm can alleviate the problem of premature convergence as well as improve the efficiency and scope of searching

    本研究將信息嫡引入遺傳演算法以度量種群的多樣性;當判斷其發生過早收斂時，則通過「大變異」操作來引入新個體，從而有效緩解了成熟前收斂的發生，提高了演算法搜索的范圍與效率。
  20. These changes have not been detected at the population level, but e - coli bacteria bugs adapted in lab experiments showed resistance when exposed to as much as 0. 1 percent wt / vol triclosan soap

    目前，這種改變（產生耐藥性）還沒有在細菌的群體水平得到證實，但是，當將實驗室常用的大腸桿菌暴露在質量體積比為0 . 1的三氯森香皂環境中時，大腸桿菌產生了耐藥性。
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