population effect 中文意思是什麼

population effect 解釋
群體效應
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  • effect : n 1 結果。2 效能，效果，效力，效應，作用，功效；影響。3 感觸，印象；外觀，現象。4 旨趣，意義。5 ...
  1. Effect of temperature on the population increase of liriomyza sativae and liriomyza huidobrensis diptera : agromyzidae

    溫度對美洲斑潛蠅及南美斑潛蠅種群增長的影響
  2. A side effect of increasing genetic variance following disruptive selection is often greater genetic flexibility of the population.

    經分裂選擇后遺傳變量增加的附帶作用，往往使種群的遺傳可塑性有所增加。
  3. A side effect of increasing genetic variance following disruptive selection often causes greater genetic flexibility of the population.

    經分裂選擇后遺傳變量增加的附帶作用，往往使種群的遺傳可塑性有所增加。
  4. Worked out the preliminary probing or studying therewith the expressible mathematical model, used the remote sensing technology to study the relation between the density of population and the intensity of urban hot - island effect

    在利用遙感技術研究城市人口分布密度和熱島強度之間密切關系的數學模型的數值表達上，做了初步的研究和探索。
  5. We constructed fences using 2 x 2 x 2 factorial design to examine the effect patterns of food availability, predation and interspecific competition on population dynamics and spatial behavior of reed voles, microtusfortis. we expected to test two hypothesises : ( 1 ) availability of high quality food, predation and interspecific competition have independent and addictive effects on population system dynamics for small mammalia herbivore ; ( 2 ) availabiliry of high quality food could reduce home range and aggressive behavior level between individuals of microtine, predation and interspecific competition have independent effects on spatial behavior of microtine

    以2 2 2析因實驗設計，在野外圍欄條件下，探討食物可利用性、捕食及種間競爭對沼澤田鼠（ microtusfortis ）種群動態及空間行為的作用，旨在檢驗下述特定假設： （ 1 ）高質量的食物可利用性、捕食及種間競爭對植食性小哺乳動物種群系統動態具有獨立的和累加的效應； （ 2 ）高質量的食物可利用性可降低田鼠個體間的攻擊行為水平，並導致其巢區減小；捕食與種間競爭對田鼠的空間行為亦有獨立的作用。
  6. From the analyse of in - out index, we know that hetian population grows quickly and keeps such condition for a long time. this causes a large number of population and makes the population denominator effect obviously. overfull population affects the regional sustainable development, and causes contradiction between the population number and the land, food and all kin

    而人口是「 ppe 」怪圈中唯一的具有能動性的因子，又位於可持續發展的基礎層，人口數量問題給當地脫貧工作帶來了困難，所以要想達到全面小康社會的目標，解決和田不可持續問題就需要找出貧困怪圈的癥結，要首先解決人口問題。
  7. 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

    採用群體遺傳學分析、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；通過雙生子一致率的比較，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群體5對遺傳性狀的基因頻率，採用u檢驗方法與相關文獻報道的其他群體進行了比較，探討了不同種族間或民族間的遺傳差異性。
  8. But an index of needs would also account for differences in the requirements for living as the population becomes more urbanized and suburbanized ; for the changes in national defense requirements ; and for changes in the effect of weather on our needs

    但是這個需求的指標同時也要在人口結構發生城市化和鄉村化的變化時，在在國防和氣候方面的需求發生變化時，能夠區分它們之間的差別。
  9. The regulation effect of cannibalism in the dynamics of the population model

    自相食對種群的調節效應
  10. Effect of temperature on the population increase of corn leaf aphid, rhopalosiphum maidis

    溫度對玉米蚜種群增長的影響
  11. Effect of temperature on the population increase of corn leaf aphid rhopalosiphum maidis on wheat

    溫度對小麥上玉米蚜種群增長的影響
  12. The international division of labor promoted by technology progress has made the population effect on demand decreased. meanwhile the effect of technology condition, income status, and capital flow condition on demand has been increasing

    技術進步推動下國際分工的發展，使人口對需求的影響縮小，技術條件、收入狀況、及資本流動條件等因素對需求的影響上升。
  13. Egg in diapause or not : logit ( p ) = - 41. 832 + 1. 422x1 ( sea - water temperature ) + 0. 509x2 ( photoperiod ) ; female laying diapause eggs or not : logit ( p ) = - 89. 001 + 6. 611x ( photoperiod ) the former reflected the effect of environmental conditions on the amount of diapause eggs of this species in xiamen waters, and it is important to study the population dynamics of this species in this area ; while the latter reflected the effect of envi ronmental conditions on inducing the female of this species to lay diapause eggs, and it is important to research the diapause inducers of this species in this area and the physiological mechanism of diapause

    卵是否滯育： logit （ p ） = - 41 . 832 + 1 . 422x _ 1 （海水溫度） + 0 . 509x _ 2 （日照時間） ；雌體是否產滯育卵： logit （ p ） = - 89 . 001 + 6 . 611x （日照時間） 。前者反映的是海區環境對整個廈門海區該種類滯育卵多寡的影響，對于研究本海區該種類的種群動力學有著重要意義；後者反映的是海區環境對該種類雌體產滯育卵的誘導作用，對于研究誘導該種類在本海區滯育的環境因子和生理機制具有重要意義。
  14. By analyzing the effect of dry fanning on grain production and the trend of population growth, this paper recommends the walking - type irrigation technique, which is practical and suitable for the situation in various regions of our country, to solve the problems of not being able to sow seeds timely and keeping a full stand of seedlings, so that we can guarantee the national grain production and provision

    摘要通過分析旱地農業對糧食生產的影響及人口增長趨勢，提出採用適合我國基本國情和各地實際情況的、實用的行走式節水灌溉技術，解決因乾旱無法適時播種和保苗這一長期困擾農民的「卡脖子旱」問題，從而保障糧食生產，保障國家糧食供給。
  15. 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
  16. Our country has a vast territory and abundant, resource the population and resources distributing not balanced, the geography and nature condition difference, and also effect by many facts such as history etc. the falling behind of the western is becoming worse. therefore the result of the western development want to achieved, it should to face the weakness, looking for the key of the development, putting the force together, and breakthrough the main point

    我國地大物博，疆土遼闊，人口和資源分佈不均，地理和自然條件也相差很大，加上歷史等諸多因素的影響，西部的落後正在加劇，因此，西部大開發戰略要取得最終的成果，就必須面對弱勢，尋找發展關鍵，集中力量，重點突破。
  17. In this article, we use the model of population prediction by modified index curve to forecast the population development of our country in the future, and in the short term, we can see that it has a very good effect

    摘要文章應用修正指數曲線模型來預測我國人口的未來發展狀況，並從短期來看有比較好的預測效果。
  18. Due to the job location of underground engineering in city are mostly stand in the centre of city, especially these large city in which the landform are complicated, the population are numerous and surrounding buildings are dense, which make the construction more difficult and the earthquake effect by blast may endanger the safety of surrounding environment in projects

    由於城市地下工程施工地點多在城市中心地帶，特別是一些大城市的中心地區，地形復雜，人口眾多，周圍建（構）築物密集，在實際的爆破工程中，使得施工難度增大，爆破產生的地震效應可能危及周邊環境的安全。
  19. Based on the data and information of the survey of normalizing minimum life guarantee system in urban population conducted by the ministry of civil affairs in nine chinese cities, this paper analyzes the method and effect that the guarantee bodies at the grassroots level investigate the income, property, hidden employment of urban residents entitled to basic living allowances, sums up the major obstacles faced by minimum life guarantee system in urban population, rethinks the applicant ' s behaviors of hiding their income and property, and appraises the index of assessing the family income and property of urban residents entitled to basic living allowances

    摘要通過運用民政部在全國九城市進行的「規范城市最低生活保障制度」的調查數據和資料，對基層辦保機構調查低保人員收入、財產、隱性就業的方法及效果進行了分析研究；對其在執行低保制度面臨的主要障礙進行了梳理評述；對申報對象隱滿收入和財產的行為進行了反思；對測評低保家庭收入和財產的指標進行了考察評估。
  20. As main driving forces, the employee ' s inter - population effect becomes the key factor that affects the firm growth

    摘要在日趨激烈的競爭沖擊下，企業成長受到許多不可預期因素的制約。
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