有理數集 的英文怎麼說

中文拼音 [yǒulǐshǔjí]
有理數集 英文
the set of all rational numbers
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 集 : gatherassemblecollect
  • 有理 : 1 （有道理） reasonable; justified; in the right 2 [數學] rational; 有理函數 rational function; ...
  1. This text summarises several control forms of gushing out oil pump test platform simply, and mainly proposes analog and digital control schemes of close ring adjusting speed, at the same time, gives the principles and implementation methods used in parameters control and measuring, this text introduces the asynchronous electromotor " s control process, in which, fuzzy control arithmetic is used, and the control commands are passed on by means of communication between mcu and frequency converter. there are two parts in this system. one is superior computer that is ordinary pc, the other is hypogynous at89c52. the functions of superior pc are control and display information through screen, and the functions of ats9c52 includes control, collecting, display, treatment, uploading of all parameters

    詳細介紹了應用模糊控制演算法，以變頻器通訊方式進行異步電機調速的控制過程。系統由上位機和下位機兩部分組成。上位機為普通pc機，主要實現系統控制、數據顯示等功能，另外還有數據庫瀏覽、數據列印等功能；下位機以at89c52為核心，負責所有參數的採集、處理、顯示、上傳、控制等。
  2. Abstract : events contributing to the establishment of statistics the science of data and its chemical branch are epitomized. as the new chemical branch named chemometrics or chemstatistics has been disputed in the circles of chemistry for a long time, reasons for adopting chemstatistics are given, which is defined as the science of gathering or generating, describing, summarizing and interpreting the data concerned to acquire new chemical knowledge or information. the fact that many traditional statistical methods, such as significance tests, analysis of variance, regression and correlation, and some others not usually considered statistical, such as model building, monte carlo method, fourier transformation, artificial nerval networks and pattern recognition, each contains one or more of the five connotations of statistics is expounded. the regular pattern that a chemstatistician grows up is approached. the urgent task is to include chemstatistics in the undergraduate or graduate curriculum of chemistry specialty. the goal of the project is to nurture chemists who know statistics

    文摘:本文追溯了統計學發展、建立中的大事，陳述了它的定義及其化學分支發展、建立的梗概；鑒于化學界對該新興化學分支學科的名稱長期存在爭議，提出了以化學統計學而不以化學計量學為該學科名稱的理由，把化學統計學定義為一個研究有關數據的收集或產生、描述、分析、綜合和解釋，以獲得新化學知識或信息的學科；闡明了許多公認屬于統計學的方法，如顯著性檢驗、方差分析、回歸和相關，以及一些尚未認定屬于統計學的方法，如模型建立、蒙特卡羅方法、傅立葉變換和人工神經網路，都含有統計學5個內涵中的一個或多個；探討了化學統計學家成長的模式，認為當務之急是把化學統計學納入化學專業的教學計劃，以培養懂統計學的化學家。
  3. The natural factors of the ground subsidence include crustal movement, geological structure, geology, physiognomy, and hydrology, etc. the human factor includes excessive exploitations of fluid resources, such as groundwater, etc. in the sixth part, the collection and management of data, the establishment and management of the database, and the protraction and usage of related maps in the research of ground subsidence were introduced and discussed

    地面沉降影響因素包括地殼運動、地質構造、地貌、氣候和水文等自然因素，以及過量開采地下水等人為因素。第六部分從數據的收集、整理、數據庫的建立和管理及有關圖件的繪制及應用等方面對gis在地面沉降研究應用作了介紹和探討。
  4. Directed by new theories and approaches of sedimentology, diagenesis and reservoir evaluation, focused on marine clastic reservoir of donghe sandstone member, in tarim basin, strata and depositional system of donghe sandstone member are classified ; typical depositional facies types, depositional model and horizontal distribution have been studied through depositional facies analysis of 17 single wells, combined with seismic data. major diagenetic events, stages and " four history " collaboration have been systematically analysesed, furthermore, the relation between reservoir diagenesis and porosity evolution has been built ; thorough studies on reservoir lithology, physical property and pore structure, reservoir development related to depositional envoironment, diagenesis and tectonic has been discussed ; reservoir has been evaluated and predicted by five influential parameters drawn from the results of the study on depositional facies, diagenesis and reservoir characteristic. in the end, favourable reservoir body distribution has been pointed out

    本論文以沉積學、沉積巖石學、沉積成巖作用與儲層地質學、儲層評價技術的新理論新方法為指導，以塔里木盆地巴楚組東河砂巖段海相碎屑巖儲層為主要研究對象，通過17口典型井的單井地層沉積相分析和成巖作用分析，結合地震資料，對東河砂巖段地層和沉積體系進行了詳細劃分，研究了東河砂巖段分佈區的典型沉積相類型、沉積模式及其平面展布特徵；系統分析了東河砂巖段碎屑巖儲層的主要成巖事件、成巖期次及其四史配置關系，指出了儲層成巖與孔隙演化的關系；深入研究了東河砂巖段碎屑巖儲層的巖石學特徵、物性分佈、孔隙結構等特徵，著重討論研究了沉積環境、成巖作用和構造作用對儲層發育的影響；運用「權重」評價法結合地層沉積相、成巖演化和儲層特徵研究的結果，選取了五個對儲層發育有重要影響的參數對儲層進行了整體的評價和預測，指出了塔里木盆地東河砂巖段儲層有利儲集體的分佈狀況。
  5. Measurement points include : over floor corresponding to the center of bogie truck, air return port, air feeding port, over coupler and draft gear, head acoustics measurement and analysis system is used in signal capture and data process

    採用headacoustics測量分析系統進行了噪聲測量，並利用該軟體對採集到的數據進行回放，截取有效數據進行數據處理，處理的結果，以圖表的形式輸出。
  6. With the review of digital image properties and continued fractions theory, this dissertation focuses on the study of the image interpolation and image reconstruction ; the main contributions are as fallows : first of all, the methods of solving the problem of inverse difference being infinite are successfully found while constructing the thiele - type continued fractions. in this case it is proposed to reorder the set of interpolating points and then construct a thiele - newton blending continued fraction

    本文的主要工作可歸納如下：首先，在以圖像像素為插值節點集，構造連分式插值函數過程中出現逆差商為無窮大的情況，給出了合理的解決辦法，提出了重新調整插值節點集的節點順序、構造thiele - newton型混合有理的插值方法。
  7. This paper discusses some research result related hev energies management system on basis of the development of hybrid electric bus - wg6120hd. the basic structure of hev energies management system is developed. the energies management system includes battery management sub - system ( bms ), engine management sub - system ( ems ), vehicle information sub - system ( vis ), energy regenerated management sub - system ( erms ), generator / electromotor management sub - system ( g / ems ), do some theory researches with test results

    本文結合混合動力電動大客車wg6120hd的開發經歷對混合動力電動汽車多能源控制系統探討了如下研究工作：建立了混合動力電動汽車多能源控制系統的基本結構，開發出了蓄電池管理子系統、發動機管理子系統、駕駛員信息子系統、能量再生控制子系統、發電機電動機管理子系統等組成部分，結合採集的有關數據對各個子系統從理論方面進行了深入探討，為以後進一步的研發工作打下了基礎、積累了經驗。
  8. Abstract : it is essential to research radar clutter with non - gaussian spectrum and non - r ayleigh distribution in modern radar design. based on spherically invariant rando m process ( sirp ), this paper applies a new algorithm to model the clutter with k d istribution in amplitude and any power density spectrum. at last it is proved tha t thi s method is correct and applicable with real simulative clutter and statistical detection result

    文摘:研究並模擬具有非瑞利幅度分佈和非高斯功率譜的雷達雜波是現代雷達信號處理中的一個重要的研究課題.文中基於球不變隨機過程（ sirp ）的建模方法，針對實地採集的幅度滿足k分佈並具有有理功率譜的高解析度雷達雜波，運用現代譜估計演算法對其進行建模和模擬，並以模擬雜波與實際雜波的數據對比和統計檢驗的結果對該方法進行了驗證
  9. These achievements will enrich the relationship between pair - network and network, and further understand the internal connection between hereditarily closure - preserving families and point countable families or locally finite families, and better certain topological non - variability of the space with pair - networks, and enrich the theory of generalized metric space. this paper reached some principal conclusions about the space with - hereditarily closure - preserving pair - networks

    弱遺傳閉包保持雙網路空間的類似結構，這些結果將更加充實雙網路與網路之間的關系，進一步明確遺傳閉包保持集族與點可數集族或局部有限集族之間的內在聯系，完善由雙網路確定的空間關于拓撲運算下的某種不變性，豐富了廣義度量空間理論
  10. According to the partition of set and the definition of covering, this article which takes advantages of the admissible and repelling law and the set theories indicates the relationship of partition and equality, special - covering and admission and the accounting formula of partition numerals and special - covering numerals

    本文根據集合的劃分與覆蓋的定義，利用容斥定理和集合理論，給出了有限集合上的劃分與等價關系、完全覆蓋與相容關系的關系，以及有限集合上的劃分數和完全覆蓋數的計算公式。
  11. In this thesis, we follow the idea of the beamlet - domain wave field extrapolation methods to construct localized propagators. through comparative study of signal decomposition efficiency using different representation schemes, we select two groups of basic functions with simple expressions and good localization properties for wave field decomposition, propagation and imaging

    本論文通過對wft 、小波基、小波包，以及相關的框架理論等的分析比較，選擇了兩組形式簡單，且具有適宜於波場外推特性的基本函數集合來進行波場分解、傳播及偏移成像問題的研究。
  12. In order to strengthen the realization of general strategic goal of hongta group, and establish a scientific, standard and reasonable human resource management system, it starts with job analysis, takes the practical situation of no. l production department into account and collects the related information through questionnaires method and interviews method, the article makes a deep analysis on those and introduces a volume of job descriptions for no. 1 production department, and provides a kind of approach to make a proper job analysis in hr management

    為了配合紅塔集團總體戰略目標的實現，加強集團人力資源管理的科學化、規范化、合理化。本文從人力資源管理中職務分析這一基礎性工作入手，結合紅塔集團生產一部的實情，運用問卷調查法和面談法收集整理出有關數據資料，通過科學的分析，得出一套切實可行的生產一部職務說明書，並由此提供了一種在人力資源管理中正確進行職務分析的方法。
  13. Their learning and training rules have been analyzed profoundly and their abilities to approximate arbitrary nonlinear function have been testified and compared by the simulation. a new rbf neural network has been presented which uses a raised - cosine function as activation transfer function. it provides a wider generalization in comparison with gaussian rbf neural networks by simulation as well as strong approximation ability, fast convergence, a rule to select the parameters of the networks

    本文詳細研究了兩種典型的前向神經網路（ bp網路和rbf網路）的學習和訓練演算法，提出了一種新穎的基於緊支集餘弦函數的徑向基神經網路，其克服了常用的高斯型rbf神經網路雖具有緊支集但各基函數非正交的不足，其收斂速度快、網路參數選取有理論依據且相比于高斯型rbf神經網路具有更強的泛化能力，模擬驗證了其有效性。
  14. Li, chang chung, sheu, tsong shin, & lee, yu cheng ( 1994 ). robustness consideration in modeling a prototype by quality engineering, paper presented at the asme design theory and methodology conference

    李友錚、許聰鑫、黎正中（ 1993 ） ：有理論式參數設計的非線性規劃解。論文發表于中國工業工程學會八十二年度年會論文集，第111 - 114頁。臺南：成功大學。
  15. We put focal point on the choice and design that the model of data mining, on the basis of the already studies of abroad and the actual needs of mobile telecommunication company. five data mining models of our mobile telecommunication operation are putted forward : customer value model, customer retention model, fraud detection model, customer segment model and best promotion method model. an online survey system was set up to collect research data, and sas enterprise miner was used to test and appraise these models

    本文沒有對的數據挖掘理論及建模方法等作過多的闡述，也沒有對數據倉庫建設方面做過細的探討，而是將重點放在數據挖掘模型的選擇與設計上，在國外的已有研究的基礎上，結合企業調研中企業的實際需要，提出了我國移動通信營業的客戶價值、客戶保持、客戶細分、欺詐識別和促銷方式選擇等五個數據挖掘模型；並建立了網上的問卷調查系統來收集研究數據，在sasenterpriseminer中對模型進行了驗證與評價。
  16. The data treating and control circuit with soft kernel technology

    採集卡所有的數據處理及控制電路均以軟核的形式設計。
  17. The main advantage of rough sets data analysis is that it does n ' t require any prior or additional knowledge about the data, which is then used in this paper to analysis the database, acquiring automatically the hierarchical rule sets. in order to ensure maximum consistency of the quantiflcational data, the genetic algorithms is used to get the optimal number and points of division of quantification intervals. at the same time the quantification intervals is fuzzified and crisp rule sets are then transformed to fuzzy rule sets

    粗糙集數據分析的主要優點在於它不要求任何關于被處理數據的先驗或額外的知識，本文利用其對數據庫進行分析計算，自動獲取數據庫在各個層次上的規則集：在保證量化后的數據庫具有最大一致性的前提下，利用遺傳演算法求取連續屬性值的最優量化區間個數及各個區間分點值；同時將量化區間進行模糊化，將多層次清晰規則集轉化為模糊規則集，利用模糊推理進行決策以提高魯棒性。
  18. Firstly, having analyzed the present research situation on agricultural climate resources by gis at home and abroad, this thesis illustrates the importance of establishing agricultural climate resources information system. secondly, basing on developmental and integrative environment of arc view gis software, as well as developmental languages ( avenue and vb ), we design agricultural climate resources information system in fujian province with friendly and practical graphic user interface, together with comparatively perfect functions. finally, supported by fjacris, based on fujian province fundamental geographic data and agricultural climate resources database on 71 weather stations, relied on mathematic analysis techniques ( such as multiple statistical analysis, fuzzy mathematics etc ), a group of models are established to reckon the agricultural climate resources on small grids 41 indexes of agricultural climate resources are reckoned to the small grids that are 0. 004 longitude multiplied by 0. 004 latitude

    本文首先通過對國內外運用gis進行農業氣候資源研究的現狀的分析，闡明了建立農業氣候資源信息系統的重要意義：接著以arcviewgis為軟體開發集成環境，並以avenue和vb為開發語言，進行了福建省農業氣候資源信息系統的設計和開發，設計出友好、實用的用戶界面，開發出較為完善的系統功能；最後在該系統的支持下，以福建省基礎地理數據和71個氣象臺站的農業氣候資源數據庫為數據源，應用多元統計、模糊數學等數學分析技術，構建了農業氣候資源的小網格推算模型，將福建省農業氣候資源的41個有關指標推算至0 . 004經度0 . 004緯度的地表網格單元上，全面地揭示了全省農業氣候資源的空間分佈規律，並在此基礎上完成了比較細致、精確和可靠的農業氣候系統功能的模糊綜合評價，以及綜合農業氣候區劃和專題農業氣候區劃。
  19. In view of characteristics that labwindows / cvi development kit sustains real _ time communication, real _ time control, perfect data disposal and data analysis abilities of experiment & measurement system, data acquisition, data disposal, data display and data file storage of the measured object are finished by labwindows / cvi, and labwindows / cvi development module is used in visual c + + development environement

    考慮到labwindows cvi具有支持試驗與測試系統底層硬體實時通訊能力、實時控制能力及很強的數據處理與分析功能等特點，本文利用labwindows cvi開發被測對象的實時數據採集、數據處理、數據顯示及數據文件存儲，並實現了vc環境下調用labwindows cvi開發模塊。
  20. Why collectivity is integral, rational number can form gather, is gather those who there is determinism ? be in prepare lessons before class, need brother elder sister so helped ! !

    為什麼全體整數，有理數可以構成集合，集合不是有確定性的嗎？正在預習中，所以需要哥哥姐姐的幫忙了！ ！ ！
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