自然范數 的英文怎麼說

中文拼音 [zìránfànshǔ]
自然范數 英文
natural norm
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 然 : Ⅰ形容詞（對; 不錯） right; correct Ⅱ代詞（如此; 這樣; 那樣） so; like that Ⅲ連詞[書面語] （然而）...
  • 范 : 名詞1 [書面語] （模子） pattern; mould; matrix 2 （模範; 榜樣） model; example 3 （范圍） boundar...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 自然 : 自然at ease; natural; free from affectation
  • 范數 : norm
  1. In this paper, based on land use maps of 1976, 1988, 2003, which were interpreted from the landsat mss / tm / etm imageries, and the map of main road, with the buffer analysis tool in arcgis 8, we studied the land use and land cover change on the two sides of the main roads in xishuangbanna, then we studied the impact of population density and the topographic factor on road effects. during the study both the comprehensive land use dynamic degree model and the land use degree comprehensive index model are taken into account, we put forward a compensatory model ? “ amendatory comprehensive land use dynamic degree model ”

    由於人類活動干擾強度加大，公路效應深度不斷擴展， 1976年為5km ， 1988年為7km ， 2003年達到11km ;受自然、社會條件的影響，不同路段的公路效應存在較大差異，甚至同一路段兩側效應也各不相同。 1976年至2003年，距公路不同距離范圍內的人口密度都在增加，且距離公路越近，人口數量密度越大、增長越快，人口分布有向公路兩側聚集的趨勢。選取人口密度為大、中、小三個樣區分別分析公路效應的范圍表明，人口密度
  2. Witten ' s open string field theory formulate the interaction of bosonic open strings in the language of noncommutative geometry. compactification of matrix theory on the noncommutative torus was argued to correspond to supergravity with constant background three form tensor field. more generally, it has been realised that noncommutative gauge theory arises in the worldvolume theory on d - brane in the presence of a constant background b field in string theory

    Witten的開弦場論用非對易幾何描述了玻色開弦的相互作用；在非對易torus上的矩陣理論的緊化對應于帶有常數三形式張量場的超引力；更為普遍的，非對易規范理論可以自然地產生在帶有常數b背景場的三維d - brane上。
  3. According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

    本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。
  4. 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
  5. The main contributions of this dissertation are listed as the followings : l ) deducing and proving the " three in one " theory of natural monopoly, that is, from the angles of economies of scale, economies of scope and economies of network, giving an explanation of natural monopoly ; 2 ) putting forward the concept of " strict superadditivity " and proving that total value function and total revenue function of network economy have strict superadditivity ; 3 ) summarizing the emerging characteristics in the market definition of natural monopoly, that is, in the monopoly industry, " market " tends to be more and more smaller than " industry " ; 4 ) expounding that the objective patterns of regulatory reforms of the railway industry in china are explicit regulation with partly characteristics of implicit regulation ; 5 ) proving the idea that the structural reforms of the railway industry in china should be hierarchical ; 6 ) demonstrating the theoretical bases for whether infrastructure management should be separated from transpo rt operation ; 7 ) expounding and proving that the interior of the railway industry in china should implement the differential property rights reform pattern

    本文的研究特點在於： （ 1 ）在規模經濟、范圍經濟的基礎上進一步推導並證明了網路經濟與自然壟斷的關系，即自然壟斷可以從規模經濟、范圍經濟、網路經濟三個角度來解釋論述； （ 2 ）明確提出了一個與鮑莫爾、潘澤與威利格等人提出的「成本劣加性」相類似的概念? ?價值優加性，並證明了網路經濟的總價值函數和總收益函數具有嚴格優加性； （ 3 ）概括了自然壟斷市場界定中所出現的新特徵，即在壟斷產業中， 「市場」正越來越小於「產業」 ； （ 4 ）進一步論證了中國鐵路產業規制創新的目標模式是兼有部分內生規制特點的外生規制； （ 5 ）在中國鐵路產業的結構改革中應體現分層次的思想； （ 6 ）明確論述了內容提要鐵路路網公司等自然壟斷環節是否分割的理論基礎; （ 7 ）提出並進一步證明了中國鐵路產業內部應實行差異化的產權改革模式。
  6. Thaw settlement cause negative friction. this paper base on the thought of " initiative cooling ", aim at three problems existing in common concrete pile used in frozen soil, a new type of pile is proposed to overcome the disadvantages of the classical pile used in frozen soil. pile body within active layer is fluted and refilled with porous materials such as gravels and ballasts, convection will be occur and then thermal exchange inside porous material in winter while only heat conduction exists in summer, as a result the soil around flutings will be cooled, so the top line of permafrost will be drive up

    本文基於「主動冷卻」地基的思想，以及針對凍土地區普通混凝土樁存在的三大問題，提出了一種新型樁的設計思路，運用數值模擬試驗手段對其冷卻機理與加固機理進行了系統研究，即在凍融活動層的深度范圍內，在混凝土樁身的表面刻槽，修築完時槽內填充碎石、塊石等多孔介質，通過外界大氣溫度的自然波動下多孔介質在冬季時存在的對流換熱機制，而在夏季只存在熱傳導，來達到主動冷卻樁周凍土和抬升凍土上限的目的。
  7. Space - time wave has a far greater and wider significance than particle wave vibration. no matter what mechanical vibration, electromagnetic surge or vocal wave, they are all manifestation of space - time vibration or a certain wave in special scope, all of which are general phenomena in nature of both macrocosm and microcosm, and can be expressed by stwf

    時空波動比粒子振動或波動有更廣泛深刻的含義，凡有空間有物質存在的地方都存在著時空波動，無論是機械振動電磁振蕩聲音振動等均是時空波動的某種表現形式，或是在某個特定時空范圍的波動，這種自然界的普遍現象在宏觀或微觀世界都可用時空波函數表達出來。
  8. The sensitivity analysis of design parameter of subgrade and pavement are used to confirmed the degree of impact on working state with change of the design parameter, it is the rational and economy that the range of design parameter are proposed. structure combination design is used to proposed basic structure of qinhuangdao ' s asphalt pavement in view of local natural environment, build material, traffic classification and soil grades. this paper puts forwards suiting 39 kinds of typical structure of qinhuangdao ' s asphalt pavement according to the actual structure, experimental section long - term observation, extensive surveys, structure theory ' s analysis and calculation

    在公路等級、交通量等級、土基等級及路面材料參數研究的基礎上進行路基路面設計參數敏感性分析，用以確定設計參數的變化對路基路面工作狀態的影響程度，並據此給出了經濟合理的路基路面設計參數范圍；結合本地自然環境、築路材料、交通狀況及土質情況進行路面結構組合設計，提出了適宜於秦皇島地區公路瀝青路面的基本結構；最後根據實際路面結構、試驗路的長期觀測、大量調查與路面結構理論分析計算相結合，提出並推薦適合秦皇島地區的39種瀝青路面典型結構，這是本課題的主要宗旨，其研究成果將直接指導設計人員的工作，並避免隨意性和盲目性，對加快秦皇島地區公路交通事業的發展將具有十分重要的意義，對其他地區也有一定的指導意義。
  9. By doing single fracture drainage experiments, this paper has successfully presented the logarithm function relationship between ratio of drainage discharge through upward and plumb drainage hole and the ratio of their equivalent diameters. the drainage effect will be the best when the included angle between drainage hole and fracture surface is 21 ~ 36

    4 、通過單裂隙排水試驗，建立了傾斜孔和垂直孔的排水量之比與其交界線的等效直徑比之間的自然對數關系式，排水孔排水量基本隨其與裂隙面的交角減小而增大；對單組裂隙排水的初步分析表明，排水孔與裂隙面的夾角在21 ~ 36范圍內排水效果最佳。
  10. The author discusses the basic category of land sustainable use and construct theoretical foundation for demonstration and policy application by summarizing and inducing the private achievements. under the leading of the theories system, the author investigates systematically natural and economic conditions, the characteristic and the present condition of land resource use and discovers the problem and result of landuse in the county. at the same time, the writer forecasts the demand of some kinds of landuse by analyzing the conductive and exploiting potential from nature, economy and society

    研究的總體思路是：總結、歸納已有研究成果，探討土地資源可持續利用的基本范疇，構建實證研究和政策運用的理論基礎；在理論體系的指導下，系統考察該縣土地資源開發利用的自然及社會經濟條件、土地資源特徵、利用現狀，揭示該縣土地利用存在的問題及其後果；從自然、經濟、社會三個方面系統分析了各種土地利用類型的生產、開發潛力，並對多種土地利用類型做了用地需求量預測；進一步深入剖析了影響土地資源可持續利用的因素指標，從而建立了指標體系；在此基礎上，採用綜合指數法和單指標多角度評價法就酉陽土地資源的可持續利用作以評價；最後，提出酉陽土地資源可持續利用的戰略構想和切實可行的對策、建議。
  11. Suggesting that the sensitivity of ic neuron to intensity change was weaker under the quiet conditions than the noise environment. it makes benefit to catch the rapid intensity fluctuations, which are thought to be important information - bearing parameters for signal processing, in human speech of " cocktail party effect " and specific communication signals of other species

    盡管弱噪聲抑制使神經元感受強度的范圍縮小，但對強度變化的敏感性卻提高，這對人在「雞尾酒會」場景下的言語交流和動物在充滿噪聲的自然環境中的聲通訊，捕捉重要的信息載體參數一信號強度以及感受強度的動態變化的能力提供了生物學基礎和演化適應的證據。
  12. Evidence for supersymmetry at high energy would be compelling evidence that string theory was a good mathematical model for nature at the smallest distance scales

    高能量超對稱性的證據將令人信服表明弦理論對于自然界在最小的距離范圍內是一個很好的數學模型。
  13. After analyze the foundation of the current national code ( code for fire protection design of tall buildings gb500045 - 95 ) through experiments and fire simulations, the author has found that there are some limitations on the use of this national code for the designing of smoke management system in an atrium. this paper has been discovered that it is not enough when using the smoke layer interface height as a criterion to make an assessment on the safety rate in a building fire, or to calculate the egress time

    通過上述實驗研究和數值模擬研究，發現當採用我國現行的《高層民用建築防火設計規范》 （ gb50045 - 95 ）來指導中庭建築的排煙系統設計時，在本文設計的火災場景條件下（參照實際的中庭商場調研情況，即火災載荷密度較大時） ，對于本文實驗研究中所採用的相似模型及原型建築，無論是採用自然排煙或者是採用機械排煙，其排煙量皆不足。
  14. After comparing the detecting result and the actual height of metal parts, it showed that the detecting error was in the nature figuration error range of one welding seam

    經與實驗獲得的實際金屬結構高度數據對比，得到金屬結構高度檢測的誤差在單道焊縫的自然成形的高度誤差范圍內的結果。
  15. In 1999, the company opened a research centre at beijing normal university to collect and interpret data from natural catastrophes, develop risk measures and establish links with other research institutes and state organisations

    1999年，瑞士再保險在北京師范大學設立研究中心，收集並分析中國自然災害的數據，開發防風險措施，並與其它研究機構和國家機關建立聯系。
  16. The two organisations support the further proposed listings of five more fresh water turtle species. " wild populations of these species, some of which already listed as critically endangered by iucn, are declining in most of their range due to apparently unsustainable collection and poor enforcement of trade controls, " said mr. samuel lee, tea programme officer

    世界自然基金會與東亞野生物貿易研究委員會支持把提議中的五種淡水列入監察范圍，東亞野生物貿易研究委員會項目統籌主任李國雄認為：當中一些物種早已被世界自然保護聯盟列為極度瀕危物種，可惜人類的破壞性捕獵活動，加上貿易監管不足，導致有關物種在大部分原產地的種群數目不斷下降。
  17. Since this type of development is inherent to the functional programming paradigm, it seems natural to use functional programming techniques when developing modular code on the java platform

    由於這種類型的開發繼承了函數編程范型，在java平臺上開發模塊化代碼時使用函數編程技術應是很自然的事。
  18. The survey done by wwf scientists in the 1, 800 square kilometre tesso nilo forest shows that it contains up to 218 vascular plant species in just one single 200 square metre plot. this is nearly twice as high as the previous number of 114 species recorded using this same technique elsewhere in sumatra

    世界自然基金會的科學家在面積達1 ， 800平方公里的tesso nilo內發現，僅僅在200平方米的范圍內，已有218種維管植物，與早前在蘇門答臘其他地方以同樣技術找出的114種維管植物相比，數量幾乎多出一倍。
  19. Firstly, on the foundation of defining the scope of the suburbs of guangzhou city, the paper completely analyzes the problem and characteristic of land use and the power mechanism of land use variation ; then the paper constructs the index system of land eco - use evaluation in the suburbs of guangzhou, and evaluates land eco - use of all districts and county level cities in the suburbs of guangzhou according to 2002 related data, its result demonstrates that land use in the suburbs of guangzhou is basically at the preliminary ecological use stage, moreover along with the distance from urban enlarging, land utilization natural ecology level is more and more high, then economical ecology and social ecology level is more and more low ; finally, in view of the problem of land use in the suburbs of guangzhou and the result of ecological use evaluation, and according to the target of building eco - city, the paper puts forward nine important and concrete regulation measurements to realize land eco - use in the suburbs of guangzhou

    第二部分主要結合廣州市郊區土地利用的實際情況進行了實證研究。首先，在界定廣州市郊區范圍的基礎上，全面分析了廣州市郊區土地利用的特徵、土地利用變化的動力機制以及土地利用存在的問題與成因；接著構建了廣州市郊區土地生態利用評價指標體系，並根據2002年有關統計數據，對廣州市郊區各區及縣級市的土地生態利用水平進行了評價，結果顯示目前廣州市郊區土地利用基本上處于初步生態利用階段，而且隨著距離城區距離的加大，土地利用的自然生態水平越來越高，經濟生態和社會生態水平則越來越低；最後，針對廣州市郊區土地利用存在的問題以及生態利用評價的結果，並根據廣州市建設生態城市的目標，提出了實現廣州市郊區土地生態利用具體的九大調控措施與途徑。
  20. Underwater acoustic data acquisition equipment is necessary for underwater acoustic experimentation. since the situation underwater is very complicated, we must adopt the data acquisition equipment which is adaptive to the abominable field underwater. all of these make us to make the data acquisition equipment to has a wide dynamic range and have the utility to acquire the signals which have large amplitude range

    水聲數據採集裝置對於水聲試驗來說是不可缺少的，由於水底的自然環境極其復雜，這就要求我們所採用的數據採集器能夠適應水下惡劣的自然環境，因此所採用的數據採集器應具有較大的動態范圍，所採集信號的幅度范圍要盡可能的寬。
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