自然數級數 的英文怎麼說

中文拼音 [zìránshǔjíshǔ]
自然數級數 英文
series of natural numbers
  • 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）...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 級 : Ⅰ名詞1 （等級） level; rank; grade 2 （年級） any of the yearly divisions of a school course; gra...
  • 自然 : 自然at ease; natural; free from affectation
  • 級數 : [數學] progression; series; number of stages; number of steps; stage number級數變換 transformatio...
  1. Traditional sports and folk sports are of great variety, which may be used as pe resources. but such contents are absent in the pe textbooks. so it is natural that the pe classes can not arouse interest of students ; the number of the playground and sports apparatus can not meet the standard. neither can they satisfy the demand of students ; it ' s practical to take advantage of the local geographical resources in pe curriculum ; extracurriculum and after - school activities can not meet the demand of students, which should be developed and utilized to a greater extent ; the structure of pe teachers is far from satisfactory

    結果顯示，甘肅少數民族地區小學體育課程資源存在著課程內容中民族傳統體育和民間體育活動項目豐富，然而教材內容沒有考慮地方和實際情況，很難引起學生的興趣；各級各類學校體育場地、器材的要求相差甚遠，現有體育場地器材都無法滿足教學要求和學生的體育需求；自然地理財富作為一種體育課程資源來開發很具有價值和實際意義；課外體育活動和校外體育活動還不能滿足學生的需求，尚須大力開發和利用；體育師資結構不合理，學歷結構偏低，且相當一部分是民辦教師轉正等問題。
  2. 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 。
  3. To the losses, the paper takes the rate of loss in grain as index ; to natural factor, the paper establishes mathematical model according to the change on meteorological factor in one year and between years ; to human factor, for its complexity, the paper takes two - grade index. beginning with the water conservancy index, plant structure index, ecology index, soil improvement and water - soil conservation index, policy index, adopting the way of weight, it combines them into human factor

    對于旱災災情，本文採用糧食損失率為指標；對于自然因素則主要根據氣象因子的年際和年內變化建立數學模型；對於人為因素，考慮到它的復雜性，採用二級指標，先從水利指標、種植結構易旱指標、生態指標、土壤改良水保指標和政策指標入手，再用權重法，將它們合成為人為因素。
  4. For long time. raising the living standards of the peasants in shan - bei district which most of the people are peasants, improving their life state and increasing the fiscal revenues of those counties are matters of interest to both the state and peasant. while how to utilize fully and reasonable the four leading industries ( the tobacco industry, fruit industry, forestry and animal industry ) which have natural advantages is one of the most effective way to solve the problem

    提高農業人口占絕大多數的陜北地區農民的生活水平、改善農民的生活狀況、增加各農業縣市的財政收入一直以來是陜北各級政府和農民共同關心的大事，而充分合理的開發和利用具有自然優勢的四大主導產業（煙業、果業、林業和畜牧業）將是解決這一問題的最有效途徑之一。
  5. Based on the pilot studies on the evaluation index system and the method of sustainable development on loess plateau, this paper has designed the structure frame of the index system including three types of index including one advanced comprehensive index - the comprehensive index of sustainable development, five basic indexes and thirty element indexes, the analytic hierarchy process which can be used to calculate the sustainable development index weight supported by entropy technology. the model can be used to evaluate the sustainable development of loess plateau comprehensively integrated by mathematical method such as compositive appraisement method of hierarchy multilayer 、 main component analytical method 、 regression analytical method and so on. pilot study on the index system has been carried out on the leoss plateau of the northern shaanxi, and the results is promising

    通過對黃土高原可持續發展評價指標體系和方法的初步研究，設計出了包括1個高級綜合指標- -可持續發展綜合指數、人口狀況等5個基本指標和人口自然增長率等30個元素指標的層次性指標體系結構框架，熵技術支持下確定可持續發展指標權重的層次分析法，以及由遞階多層次綜合評價、主成份分析和回歸分析等數學方法所集成的可持續發展全面綜合評價模型，並以陜北黃土高原為例進行了具體的應用分析與評價。
  6. The grand mediocrity of today ? everyone being the same in survival and number of offspring ? means that natural selection has lost 80 of its power in upper - middle - class india compared to the tribes

    當今人與人在很大程度上的平等? ?即面對自然淘汰法則人人機會均等，並且連子嗣的數目都一樣? ?意味著和在印度土著部落中的情況相比，印度中上層階級中已喪失了80 %的自然選擇中的優勢。
  7. The grand mediocrity of today ? ? everyone being the same in survival and number of off - spring ? ? means that natural selection has lost 80 % of its power in upper - middle - class india compared to the tribe

    參考譯文]當今人與人在很大程度上的平等? ?即面對自然淘汰法則人人機會均等，並且連子嗣的數目都一樣? ?意味著和在印度土著部落中的情況相比，印度中上層階級中已喪失了80的自然選擇中的優勢。
  8. The natural boundary of random series

    隨機級數的自然邊界
  9. This paper simulates the effect of voltage fluctuation inspection through the tool of matlab. and proves the filters ' s stability. in the part of self - checkout, pi ( proportional integral ) control arithmetic is put forward to check the gain k and the calculated results show the method ' s effectiveness. then many comparements toward pst are done in different realization methods such as different interpolation points classification number and sample frequency. though simulation and calculation we can see the designed flicermeter can meet our country ' s standands

    文中利用matlab對電壓波動的檢測效果進行了模擬；並對涉及到的濾波器的穩定性做了證明；在自校驗部分提出了將pi （比例、積分）演算法用於數字濾波器增益k值的確定，取得了不錯的效果；然後分別從取不同插值點、不同分級數和不同采樣頻率這幾個方面出發，對計算出的p _ （ st ）值進行了比較。
  10. The real runoff time series was divided into the high frequency item and the low frequency item with the help of the wavelet analysis first, then the two items were modeled by chaos theory and the stepwise regression algorithm, at last the output of the two models were added together.

    論文首先藉助小波分析，將實測徑流時間序列分解為高頻項和低頻項兩項，其次對這兩項分別用混沌理論和逐步回歸理論建模，其中混沌預報藉助基於自組織法求解的的volterra級數來完成，然後將兩者結果疊加起來。
  11. The other is that upgrading subspecies into species simultaneously increases the number of rare species ( by fragmenting populations ) and augments the biodiversity of a piece of habitat and thus its claim for protection

    另一個理由是，把亞物種升級物種，一方面增加了稀有物種的數量（動物的數量被更多的物種平分） ，另一方面，自然保護區就可以據此宣稱自己的領地內保護了更多的物種。
  12. 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。
  13. Theorem 2 ( ordinary comparison test ) suppose that and are positive series, and. if the series converges, so does ; if the series diverges, so does the series

    推論設和都是正項級數，如果級數收斂，且存在自然數，使得當時，有，則級數收斂；如果級數發散，且當時，有成立，則級數發散。
  14. The verification process for a digital signal processor with very long instruction word ( vliw ) named thuasdsp2004, which is developed by tsinghua university microelectronic institute sponsored by national natural science foundation, is analyzed at the register - transfer level in this paper

    本文介紹在國家自然科學基金的資助下，由清華大學微電子研究所設計的具有超長指令字（ verylonginstructionword ， vliw ）體系結構特點的數字信號處理器thuasdsp2004的rtl級功能驗證工作。
  15. Since the netherlands is located at the very end of the rhine river, the water must first be subjected to advanced treatment, then injected underground for several months of natural purification before it can be used

    荷蘭處于萊茵河最下游，須以高級處理，甚至再灌注于地下，經地層自然凈化數月後再用。
  16. The natural progression follows a series that is popularized in the west as the " fibonacci series "

    自然級數遵照一在西方普及的如「斐波納契級數」那樣的數列。
  17. This paper firstly applied sequential cluster method to set up the classification standard of precipitation state based on the fact that there are much uncertainty and imprecise characteristics in the precipitation course ; then this paper presented a method which is called markov chain with weights to predicted the future precipitation state by regarding the standardized self - coefficients as weights based on the special characteristics of precipitation being a dependent stochastic variable ; and applied this method to a real hydrological observation station with nearly 50 years precipitation information in shanxi province at last, an ideal result was obtained

    摘要首先基於降水過程存在大量不確定性、不精確性的特點，應用有序聚類的方法建立降水豐枯狀況的分級標準；然後針對降水量為相依隨機變量的特點，採取以規范化的各階自相關系數為權重，用加權的馬爾可夫鏈模型來預測未來降水的豐枯變化狀況；最後以山西省某水文站近50年的降水資料為實例對該方法進行了具體的應用，獲得了較為滿意的結果。
  18. At present, there are merely a few regions in our country that have already completed arable land appraisal, such as changqing county of shandong, yiwu city of zhejiang, suburb of liuzhou, and so on, owing to complexity of process that farmland quality forms, localization that the people know to factors causing its grade, and section otherness

    但由於農用地質量形成過程的復雜性和人們對影響其質量等級因素認識的局限性，加之，各地在自然、社會和經濟等方面的差異性，使得我國目前只有山東長青縣、浙江義烏市、廣西柳州市郊區等少數地區完成了農用地分等定級估價工作。
  19. ( 1 ) as a whole, the qualities of the urban human settlements construction in lanzhou becomes better than ever, but the development of the nature subsystem, the construction subsystem, the supporting subsystem and the society subsystem are not in harmony, and the average advance speed of the four subsystems can be described that the supporting subsystem is quicker than the society subsystem, the society subsystem is quicker than construction subsystem and the construction subsystem is quicker than the nature subsystem

    利用蘭州市區過去1990 ? 2002年城市建設等方面的統計數據，對13年蘭州城市人居環境建設質量，在時間序列上進行了趨勢評價，並得出了以下一些主要的結論： （ 1 ）蘭州城市人居環境建設質量正向著高級化的方向演替。自然子系統、建築子系統、支撐子系統和社會子系統的發展嚴重的不協調，四大子系統平均提升速度表現為：支撐子系統社會子系統建築子系統自然子系統。
  20. We also offer products suitable for private tutors or parents who teach their children themselves, story books of various levels with cd, science and math text and activity books, phonics books and dvd, all of which are award winning books in their respective countries and recommended by english teachers

    另有適合家長或家教老師使用的進口故事書，有聲cd分級讀本，自然科學、數學讀本及課本，自然發音學習課本及教學dvd ，都是國外得獎與美語教師推薦之作品。
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