群頻率 的英文怎麼說

中文拼音 [qúnbīn]
群頻率 英文
groudrequency
  • : 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
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • : 率名詞(比值) rate; ratio; proportion
  • 頻率 : frequency; rate
  1. The frequency of albinism gene in the andrias davidianus population in the giant salamander hole in xingwen county, sichuan province

    四川省興文縣大鯢洞的大鯢種中白化基因的
  2. ( 4 ) the correlation property between the distribution of attenuation factor and that of the group velocity is indicated, in this study

    ( 4 )研究結果顯示,在域內,面波衰減系數分佈與速度分佈具有一定的相關性。
  3. There is also a general lowering of vigor in inbred stock ( inbreeding depression ), which is especially pronounced amongst normally outbreeding populations

    而雜合型出現的降低,因而降低了種基因的潛在可變性。
  4. Heredity modes of 6 traits were studied by analysis of population genetics, by the method of family combination analysis, by the methods of proband ' s sib analysis, segregation analysis, the threshold model of polygenes, and analysis of typical family trees, according to the data of the 72 families. the relative importance between genetic and environmental effect on each character was evaluated by comparing the coherence of twins. gene frequencies of 5 genetic characters, calculated from han group in huhhot, were compared with other groups by u - test so as to study the population or nationality difference in heredity

    採用體遺傳學分析、家系組合分析法、先證者同胞法、分離分析法及多基因閾值模式分析方法對所得家系資料進行了統計學分析,結合家繫系譜分析探討了上述6項特徵的遺傳方式;通過雙生子一致的比較,對上述特徵的遺傳與環境效應的相對重要性進行了評價;計算了呼和浩特市漢族體5對遺傳性狀的基因,採用u檢驗方法與相關文獻報道的其他體進行了比較,探討了不同種族間或民族間的遺傳差異性。
  5. Assume the and are the frequency of a in the donor and recipient populations.

    假定和分別是輸出和輸入體中基因a的
  6. Chapter 4 designs and determines the parameters of the algorithm adopted in the instrument system. analyzes and compares the different effects to frequency estimation when using digital filters with different group delay ; determines the data length, a parameter of frequency estimation ; introduces the method of available judgment of sensing signal and determines the judgment threshold as well

    第四章設計和確定了儀器系統軟體演算法的部分參數:分析和比較了不同延遲特性的數字濾波器對估計的影響;確定了影響估計參數?數據長度的取值規律;給出了判斷傳感信號有效性的檢測方法並確定了檢測門限的取值規律。
  7. This paper concerns studies on rhizobia in symbiosis with important legume soybean and peanut crops in china, following : 1 ) summarized bio - diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, and strain - host promiscuity and compatibility from large and small samples. 2 ) reviewed symbiont improvement in both sides of rhizobia and hosts, involving selection of effective rhizobial strains, evoluation and utilization of the host germplasm for symbiotic properties, and selection of the both sides for special characters. 3 ) discussed the subject on the rich symbiont germplasm resource in china and on further research being necessary to exploitation and utilization of the benificial germplasm

    針對我國主要豆科作物大豆和花生的研究成果,並結合本身研究工作內容, ( 1 )總結了與宿主共生的根瘤菌生物學多樣性,包括大、小樣本的土著根瘤菌體數量、分離、類型與分佈及其菌株宿主共生混交性與親和性; ( 2 )評述了根瘤菌宿主植物共生體雙邊固氮改良,包括優良菌株的選育、宿主品種資源共生特性的評價與利用及特異性狀的選擇; ( 3 )討論了我國這一類共生體資源的豐富性以及有必要進一步加大力度研究有益資源的開發和利用的問題。
  8. Abstract : this paper concerns studies on rhizobia in symbiosis with important legume soybean and peanut crops in china, following : 1 ) summarized bio - diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, and strain - host promiscuity and compatibility from large and small samples. 2 ) reviewed symbiont improvement in both sides of rhizobia and hosts, involving selection of effective rhizobial strains, evoluation and utilization of the host germplasm for symbiotic properties, and selection of the both sides for special characters. 3 ) discussed the subject on the rich symbiont germplasm resource in china and on further research being necessary to exploitation and utilization of the benificial germplasm

    文摘:針對我國主要豆科作物大豆和花生的研究成果,並結合本身研究工作內容, ( 1 )總結了與宿主共生的根瘤菌生物學多樣性,包括大、小樣本的土著根瘤菌體數量、分離、類型與分佈及其菌株宿主共生混交性與親和性; ( 2 )評述了根瘤菌宿主植物共生體雙邊固氮改良,包括優良菌株的選育、宿主品種資源共生特性的評價與利用及特異性狀的選擇; ( 3 )討論了我國這一類共生體資源的豐富性以及有必要進一步加大力度研究有益資源的開發和利用的問題。
  9. Design of virtual instruments based ultrasonic data acquistion system

    器件實現的虛擬電子儀器中的高智能
  10. A big part of freshmans don t know how their device is modemed or even the frequency, they usually begin work as soon as they reach the site, interference sometimes caused ; in fact remote controlled flying models are very suitalbe for colony games, knowing each other s frequency can benefit the safety and friends making, why not do that

    有很大部分的初學者不知道自己所使用設備的調制方式甚至,到場就自己在一邊「埋頭苦幹」起來,往往由此引起干擾事故發生。其實遙控模型絕對是適合體活動的休閑運動,難得有同好知己,到場就應相互點頭問候,既可結交朋友又能確保安全,何樂而不為?
  11. The acs algorithm inspired by the ants foraging principle is used to solve the problem of the homogenous frequency enlargement of design flood in this paper, the sketch of ants foraging about design flood computation is constructed and retailed process is provided

    摘要採用蟻acs改進優化演算法求解了典型洪水同放大問題,構造了用於設計洪水過程求解的螞蟻覓食概化結構圖,並給出了具體求解思路和流程。
  12. 3. based on the 2 x 2 contingency table, interspecific association among 17 common species forests of meizi lake area was examined by using various indices, the results are s as follows : ( 1 ) w - test indicated that positive correlations exist among the common populations ; ( 2 ) the most pairs of the populations in the forest communities in meizi lake area showed positive correlations

    採用2x2列聯表,通過x 『一檢驗、 ac值、 pc值及點相關系數小值對在樣地中出現較高的17個種的種間聯結進行了定量分析,結果如下:門) w一檢驗表明,梅子湖森林植被樣地17個常見種的總體種間關聯性里顯著正關聯。
  13. Our results indicated there was great potential for selective breeding. in aflp fingerprinting, some loci showed quite different frequency in four generations and they were assumed as putative markers closely related to disease - resistant trait

    Aflp指紋圖譜中的一些位點,其顯性基因在四代體中變化明顯,推測是由人工選育造成的,可能與抗病性狀密切相關。
  14. The variant alleles are very frequent in populations, with the hightest frequence, 0. 29, found in africas. the ggc 54gac allele is common in chinese with gene frequency above 0. 1. hence, mbl deficiency is the most frequent immunodeficiency, but its pathological mechanisms remain elusive and await further investigation

    這些等位基因為常染色體共顯性遺傳,人中其基因高得令人驚奇,最高者竟達0 . 29 ,我國漢族ggc54gac約0 . 1 。
  15. Objective to investigate the frequency of chromosome abnormality in 415 infertile males

    摘要目的研究中國人男性不育患者的染色體異常分佈。
  16. Since the flexural waves in the plate would produce scattered waves when they propagated through the flaw of a plate, the measured signals of a strain gauge contented the direct waves propagated from the impact source and the scattered waves propagated from the flaw

    藉由小波轉換進行訊號的時分析,進而求得彎曲波由沖擊點至各應變規的波程時間,並計算出彎曲波在各中的波速度。
  17. Systematic cluster analysis was carried out on hu sheep in china in comparison with the same data of 9 asia sheep populations and 5 european sheep ( breeds in japan ) populations. 15 populations can be clustered in terms of gene frequency of 10 loci and 33 allele in blood enzyme and other protein variations

    摘要以中國湖羊為研究對象,搜集國內外9個亞洲綿羊體和5個在日本的歐洲綿羊體的相同資料作為對照,根據控制血液酶和其他蛋白質變異的10個基因座位共計33個等位基因的,進行系統聚類分析。
  18. The inbreeding index and genetic distance based on the gene frequencies were 0. 0283 and 0. 028

    根據基因計算出兩個體的近交系數為0 . 0283 ,遺傳距離為0 . 028 。
  19. The basic principle, main properties, typical parameters, technical characteristics and general situation of klystron are introduced. the electron beam prebunching in the modulated cavity and shift tube of relativistic klystron amplifer ( rka ) is studied analytically, a self - consistent equation of radiation generated by the prebunched electron beam in the radiation cavity is derived using the field method of particle ? wave interaction instead of the electrical circuit method, and in terms of it, the gain in the linear regime calculated, a field analysis method is proposed. the theory analysis shows that the characteristic parameters, such as resonance frequency, real part of gap - impedance, external quality fadtor in all kinds of klystron output circuits including single - beam, multi - beam, single - gap, multi - gap, single - beammulti - gap, multi - beam multi - gap klystron output circuit, can be calculated by the field analysis method

    本文系統的介紹了速調管的工作原理、主要特點、發展概況、主要性能指標和技術特點,解析的研究了電子束在相對論速調管放大器的調制腔和漂移管中的預聚;用粒子波互作用的場方法導出了在輻射腔中預聚電子束產生輻射的自洽方程,同時對線性區的增益進行了計算。理論分析表明,場分析法可用於計算單注單間隙、多注多間隙、單注多間隙和多注多間隙速調管輸出迴路的諧振、間隙阻抗實部和外觀品質因數等特性參數。
  20. Speech communication is one of the most used modes in the digital trunking communication system. excellent algorithm of speech coding can save the bandwidth resource, improve the utilization of frequency, so it has important value for investigation

    語音通信是數字集通信系統中最常用的通信方式之一,優良的語音編解碼演算法能夠更加有效地節省帶寬資源,提高利用,因此具有重要的研究價值。
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