群常數 的英文怎麼說

中文拼音 [qúnchángshǔ]
群常數 英文
grou constant
  • 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
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. In the normal population, the number of cgg repeats in fmr1 is highly polymorphic with the variation ranging from 6 to 54. such statistical data are obtained from caucasia people

    Fmri基因cgg重復次數在正常人中呈高度多態性，變異范圍n 6 sd ，這一變異在正常人群體中的分佈情況的統計數據主要來自高加索人群體。
  2. 3 ) the cochineal insect can develop well when the light is 601ux to 9801ux while the temperature and humidity are at suitable levels. comparing from the population tendency index, the index is larger under weaker light

    3 ）在光照對胭脂蟲的影響方面，只要有適宜的溫濕度條件， 601ux到980lux的光照強度下胭脂蟲均能正常發育，從種群趨勢指數上看，弱光下胭脂蟲的種群趨勢指數更大。
  3. Falkland islands fur seal perches on a rock outcrop off new island, where seafood - rich waters nourish a wildlife population diverse in nature and often astonishing in number

    圖中一頭福克蘭島海狗正棲息在新島外的一塊礁石上，這片海產豐富的水域滋養了種類繁多的野生動物群體，有些的數量非常驚人。
  4. A falkland islands fur seal perches on a rock outcrop off new island, where seafood - rich waters nourish a wildlife population diverse in nature and often astonishing in number

    圖中一頭福克蘭島海狗正棲息在新島外的一塊礁石上，這片海產豐富的水域滋養了種類繁多的野生動物群體，有些的數量非常驚人。
  5. The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included

    雲中凝結核ccn的數濃度採用超幾何函數表示；雲水向雨水的自動轉換過程採用grabowski （ 1999 ）的公式，考慮了雲滴譜的特徵和發展變化對該過程的影響，而不是採用原方案給定閾值的方法描述該過程；對連續碰並方程不再將粒子落速差作為常量提出積分號外，而是直接作為粒子直徑函數在積分號內求解，這樣處理可以迴避使用粒子群的平均落速帶來的誤差；增加了霰和雪、霰和冰晶的碰並微物理過程。
  6. Y chromosome is transmitted in the form of hap - loid, leading to extreme disequilibrium of y chromosome genetic markers distribution in different population. the prerequisite of str application in forensic medicine is establishment of a database of population y - str loci haplotype distribution. therefore we need to form haplotypes by using the known highly polymorphic str loci and detect more local population

    由於y染色體呈單倍體遺傳，導致y染色體遺傳標記在不同人群中的分佈極不平衡，群體差異比常染色體str位點更加顯著，在法醫學應用的前提條件是：建立含有多個y - str位點的單倍型的群體分佈數據庫。
  7. Hari seldon ' s plan is often treated as an inevitable mechanism of society, a vast mindless mob mentality of quintillions of humans across the galaxy, and many in the series struggle against it only to fail

    謝頓計劃常被認為是一種必然的社會結構論，由銀河系中數以億萬計的廣大無知群眾的心理支持著，在基地系列中許多角色試圖去對抗它，但都徒勞無功。
  8. Study of stereometric parameters of optic nerve head of normal eyes using heidelberg retina tomography

    視網膜斷層掃描儀對正常人群視乳頭形態結構參數的測定
  9. In the turks and caicos islands, where there are less than 20, 000 people, the number of students in some schools is so low that students of several different grades are taught in the same classroom

    在人口不超過2萬的特克斯和凱科斯群島上，一些學校里的學生人數非常少，幾個年級的學生在同一個教室里上課。
  10. The fitness formula is the most - used function in the genetic algorithm it will be invoked population size x generations times, so you should make it as simple and as fast as possible

    適應性公式是遺傳演算法中最常用的函數， （它將要被調用的次數是（人群大小） x （代的數目）次） ，所以您應當盡可能的使它簡單、快速。
  11. 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。
  12. In six selected areas of the subtropical semi - humid evergreen broad - leaf forest ecosystem of yunnan diaolin mountain, during drought season from november, 1992 to april, 1993, authors studied and analysed, throught adopting the taxonomic, ecological and mathematical statistics method, the distribution, composition and domi - nant fungi of the small fungi as well as biodiversity. altogether 706 strains statistics unit, belonging to 28 genera, dominant fungi 678 strains statistics unit, 20 dominant fungi gen - era

    在雲南雕林山亞熱帶半濕潤常綠闊葉林森林生態系統的六個具有代表性的樣區中，於1992年11月至1993年4月旱季期間，運用系統分類、生態分析和數理統計的方法，對小型真菌種群的分佈、組成、優勢菌及其生物多樣性進行了分析，共分離獲得小型真菌菌株統計單位706株，分屬於28個屬，其中，優勢菌678株，分屬於20個屬。
  13. " in heavily fished areas like hong kong you would expect to see some recovery of the fish populations around five years after fishing is banned, and it is highly likely that the two core areas which are just a few hundred metres in length are far too small to benefit larger fishes like parrotfishes which may roam over considerable areas, " dr. cornish said

    鄺力存博士指出：在香港等捕魚活動頻繁的地區，通常在禁止捕魚約五年後，魚類種群的數目理應有所回升。雖然現時設有兩個禁捕核心區，但縱長只有數百米，體形較大且活動范圍較廣的魚類如鸚鵡魚等未必能受惠。
  14. Because there are so many to feed, the restaurant and catering business is one of the largest and fastest - growing industries in the world

    由於飯店和飲食攤點服務的群體數量非常大，所以該行業現在是世界上規模最大、發展最快得的行業之一。
  15. Alloy fabricated by arc melting consists of continuous nbssi matrix and dispersive distributed nb particles. the metastable nbasi phase is found to have a tetragonal crystal structure with space group p42 / n and lattice parameters a = 1. 021nm, c = 0. 519nm

    O 0 ）金屬間化合物的顯微組織由連續的nb3si基體、彌散分佈的nb粒子組成，其中亞穩態相nb3si為四方結構，空間群p42 n ，點陣常數a l
  16. In the study of semigroup theory. a very basic problem is that what kind of the semigroup ' s property we can get from its idempotent ' s property

    在半群代數理論中，一個非常基本的問題是，從半群的冪等元的性質可以得到該半群的何種性質
  17. 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。
  18. Relative results which have obtained in [ 1 ] are generalized. results provide theory basis for objective management of renewable biological resources. many objective problems often be trans - ferred to how to find the solution of differential equation ( ode, fde )

    本文在第二部分研究了以gilpin - ayala單種群增長模型為基礎，假定生產函數為ex ~ （為正常數）的捕獲模型的最優開發問題，確定了最優開發策略，推廣了文獻[ 1 ]中已有的相應結果，為可再生生物資源的實際管理提供了理論依據。
  19. The physical parameters of the reactor core are calculated by method of the two - group theory

    應用雙群理論計算了反應堆堆芯物理常數。
  20. The features of phase and group velocity were advanced by means of preparing samples with different shaping. the phenomenon of " cusp " in group surface of quasi - shear wave ( qsv ) was observed. the inversed velocity surface according to calculated elastic constants in real orthotropic media is consistent with practical measured velocity surface

    用加工不同樣品形態的方法給出了正交各向異性介質的相速度和群速度特徵，觀測到各向異性介質群速度面上的尖點現象，並用測試得到的正交介質的彈性常數進行了數學模擬，其波場特徵與測試的速度面特徵相符。
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