正方四分面類 的英文怎麼說

中文拼音 [zhēngfāngsìfēnmiànlèi]
正方四分面類 英文
tetragonal tetrahedral class
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 四 : Ⅰ數詞（三加一后所得） four Ⅱ名詞1 [音樂] （中國民族音樂音階上的一級） a note of the scale in gong...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 類 : Ⅰ名1 （許多相似或相同的事物的綜合; 種類） class; category; kind; type 2 （姓氏） a surname Ⅱ動詞...
  1. Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece

    將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義
  2. In order to know entirely about the students " mental health current condition in northeast far area, and treat the existing questions correctly, develop the mental health education, ducuments, action studying, comparing and experience summarizing ; on the basis of analyzing and summarizing the trend and problems in the development of psychology health job, we investigate and analyse 4451 students mental health condition ranging from grade 4 in primary school to grade 3 in senior school. at the same time, we make an auxiliary investigation of the environmental elements ( condition of school job, condition of teachers " psychology quality, family environment ) that effect the students mental health, and combine with the job experience, we will make an expositions about reginal and practical interference tactics

    為全面真實了解東北邊遠地區學生心理健康現狀，正確認識存在問題，從而積極、科學地開展心理健康教育，採用調查法、文獻法、行為研究法、比較法及經驗總結等方法，在分析總結國內心理健康教育工作發展趨勢和存在問題的基礎上，對某地區市、縣、鄉各級各類學校小學四年級至高中三年級共4451名學生的心理健康狀況進行了調查分析；同時，對影響中小學生心理健康的環境因素（學校工作狀況，教師心理素質情況，家庭環境等）進行了輔助調查，並結合工作實踐，對區域性、具有針對性、實效性的干預策略進行了論證。
  3. This thesis conducts a detailed analysis of yangda dairying group ( ydg ) from the perspective of marketing situation, competitiveness and designs four sorts of management strategies through " swot ". there are : ( 1 ) to emphasize freshness of our products ; ( 2 ) to regulate or innovate inner organizational structure of the enterprise under the pressure of external competition ; ( 3 ) to introduce green marketing concept by taking advantage of advanced technologies at yangzhou university ; ( 4 ) to avoid competition with rivals on room - temperature dairy products

    本文從營銷環境、競爭力的角度對揚大乳業集團作了細致分析，並通過swot分析設計出了四大類經營戰略方案，即採取差別化戰略突出乳品在本地市場的新鮮優勢；利用外部競爭壓力加快推動對內部組織結構的調整和改造；充分發揮高校科技與人才優勢，引進綠色營銷理念，塑造綠色乳品形象，引導綠色乳品消費，避免在簡單的買贈促銷上與競爭對手對抗；採取「有所為有所不為」的策略，避免在常溫產品上與競爭對手進行正面競爭。
  4. China has a vast population and a broad market, thus liquor consumption owns a considerably potential market in china. however, due to the intence yet disorder competition of the present market, the marketing of the liquor industry in china has fallen into an rather awkward dilemma. the hidden trouble, the lurking danger, cause the businessmen in this line unable to extricate themselves from a low - leveled ricious competitive cycle. such severe challenge also confronts yuechitequ company. therefore, the most urgent problems waiting for resdring lie in how to take advantage of the present resoures effectively, how to distinguish the market situation, and how to institute a scientific product - popularizing programme in order to keep the enterprise standing undefeated in the intense competition, and develop the enterprise rapidly, favorably. this thesis makes a thoughtful analysis about the external conditions of market and internal ones resources in the yuechitequ by means of inrestication through questionaire and scientific data processing. in the second part, with the application of stp system theory of marketing and new - product - pricing theory, it designs and further expounds the popularization of the new products of this company, then forms a excutable performance and makes a constant rerision via market practice. in this way can it explor a suitable road to popularize the products in the liquor market, help the enterprise to free from the difficulties and progress healthely, consitently

    本文通過在岳池特曲公司現有產品市場進行問卷調查，運用科學的數據處理方法對所回收的658份問卷統計分析，以及利用美國哈佛大學商學院著名教授邁克爾?波特（ michaelporter ）提出的五種力量模型和價值鏈與vrio分析理論，對白酒市場的公開數據細致分析，以明確四川省岳池特曲酒業有限公司實施新產品市場推廣所面臨的市場條件和內部資源條件，在此基礎上，本文運用市場營銷學中stp系統理論、新產品定價理論等，對岳池特曲公司推出的白酒新產品進行市場細分、確定目標市場和市場定位，並根據市場營銷4p理論制定新產品的產品策略、價格策略、渠道策略、市場促銷推廣策略，形成最終整體完善的可執行方案，再通過市場實踐對推廣方案進行檢驗、修正，力圖在酒類市場中探索一條新產品市場推廣的適用道路，並幫助企業擺脫困境、邁開步伐、持續健康的發展。
  5. According to the background information from the above, the facts of the combination, expansion and quick development of wut, and the strategic significance of the world ' s economy and the development of university, and from the angle of history, reality and the future, to a large degree, this paper analyzes three strategic environment faced by university, that is : intellectual economy and the world ' s new technical revelation ; marketing economy and modernization of china ; the popularity of education and the reform of chinese higher leaning system. through a thorough analysis of thirty six comprehensive universities and science and engineering colleges owned by the national education department, and through comparison between typical universities, this paper also objectively analyzes the strength and advantages of the development of wut on the aspects of subjects, trade and scale, and the disparity existed in subject strength, scientific and technical ability, qualified personnel construct and the economic base. through those analysis, it points out several problems in the development of university, such as " no common idea, no complementary subjects, no fixed core, no unified campus " and etc. therefore, a basic conclusion is drawn, that is " generally speaking, wut ranks among the second class of the nation ' s higher learning groups, and which possesses many potentialities to help itself step into the first class universities

    本課題正是從上述背景出發，緊密結合武漢理工大學合併、擴招和大發展的實際，從世界經濟和大學發展的高度，從歷史、現實和未來的角度，大范圍、多層面、寬視野地分析了學校發展所面臨的知識經濟和世界新技術革命、市場經濟和中國現代化建設以及教育大眾化和高校管理體制改革三大戰略環境，通過對育部所屬36所綜合及理工類高校的整體分析和典型大學的個案對比，比較客觀地分析了學校發展在學科、行業和規模三方面的實力與優勢以及存在的學科實力、科技能力、人才結構和經濟基礎等四方面的差距，指出了學校發展中「無共同的理念、無互補的學科、無凝聚的核心、無統一的校園」等問題，並得出一個基本結論：學校總體位居全國高校第二集團水平，具有向一流大學邁進的基礎，同時，相比國內一流大學又有很大的差距。
  6. The content of this paper is arranged as foll owing : chapter 1 introduces the concept of credit, credit risk and credit assessment, as well as the history and development of credit assessment ; chapter 2 introduces the history of ai technology, and the background of expert system and neural network. characters and disadvantages of expert system and neural network are presented respectively and the necessity of combining expert system and neural network is lightened ; chapter 3 shows the process of dealing with sample data, including the treatment of exceptional data and factor analysis, and puts forward the concrete framework of the mixed - expert credit assessment system ; chapter 4 introduces concept of object - oriented technology, and constructs object model and functional model after analyzing the whole system. it also illustrates the implementation of concrete classes by an example of rule class and the inference algorithm in the form of pseudocode ; chapter 5 introduces the structure of the whole system, the major functional models and their interfaces, and the characteristic of the system is also generalized ; chapter 6 summarizes the whole work, and points out the remaining deficiencies as well as the prospective of this method

    本文具體內容安排如下：第一章介紹了信用、信用風險、信用評價的概念，回顧了信用評價的歷史、發展和現狀，並綜合各種信用評價模型，指出這些模型各自的優缺點：第二章簡單描述了人工智慧技術，著重介紹有關專家系統與神經網路的基礎知識，通過總結它們的優缺點，指出結合專家系統與神經網路構造混合型專家系統的必要性；本章還介紹了神經網路子模塊的概念，提出了混合型專家系統的一般框架與設計步驟：第三章對樣本數據進行處理，包括異常數據的剔除、因子分析等，提出了信用評價混合型專家系統的具體框架結構，介紹了系統知識庫的主要部分、基於優先級的正向推理機制的流程、以及基於事實的自動解釋機制的具體實現方法；第四章介紹了面向對象技術，進而採用面向對象對信用評價系統進行分析，建立了對象模型和功能模型，並在此基礎上，採用c + +語言以規則類為例說明系統中具體類的實現，用偽代碼的形式描述了推理的演算法；第五章描述了整個系統的結構，對系統主要功能模塊和界面進行了介紹，並總結系統的特點；第六章總結了全文，指出本文所構造系統存在的不足以及對將來的展望。
  7. They include : ( i ) problems existing in development strategy of army listed companies, such as, replacing strategic plan with management plan ; lack of understanding for the importance of strategic management ; no development strategy at all in some companies. without strategic plan, a company can only have a partial understanding of the situation instead of a comprehensive one, just like the blinds feel the elephant ; ( ii ) the thesis intends to analyze the inside and outside factors of army listed companies to specify their development goal while taking suntime international as an example to have further analysis ; ( iii ) combining with strategic planning theory, the thesis tries to probe into the development strategies of the eight army listed companies. army listed companies can be divided into two categories : one category includes the four companies with suntime and new zhongji as their heads

    本文主要論述兵團上市公司在發展戰略方面的有關問題，包括： （一）兵團上市公司在發展戰略上存在的問題，如：以經營規劃代替戰略規劃，對戰略管理重要性認識不足，有的上市公司甚至沒有發展戰略等等，缺少戰略的規劃就如同六個瞎子摸象一樣，只識局部不掌握全局，而這正是兵團上市公司在戰略研究方面存在的問題； （二）本文試圖通過分析兵團上市公司存在的內部因素，外部因素，確定兵團上市公司的發展目標，並以新天國際為例作了進一步分析； （三）本文結合戰略規劃的理論，試圖對兵團八家上市公司發展戰略進行探索，兵團的上市公司分為兩類：一是以新天國際，新中基為首的四家企業，在本行業中經營成熟，具備實現多元化的市場戰略的能力，並可以根據市場，產品的情況採取幾種戰略方式；二是其它企業，在本行業中還存在著發展潛力，應集中力量在本行業中作強，應施行差異化戰略，名牌戰略，將自己的產品作強，進而在整個行業中作強，這些企業暫時不要去搞多元化戰略； （四）兵團企業能否做大還取決于能否持之以恆的戰略。
  8. To directly estimate the life of this kind of motor, and to design a orbit curve with the longest life at same condition, this paper gives theoretic research of the equal contact stress inner curve of radial piston motor. the research is divided into four parts : 1 ) taken all forces the piston endured into consideration when radial piston motor working, the force between roller ( or ball ) and orbit is deduced. the simple style of the press expression can be confirmed by ignoring minor influence factors after analysis all factors that will influence this press

    靜壓傳動技術在各類工程機械中得到廣泛的應用，對作為其核心部件的徑向柱塞式低速大扭矩液壓馬達的研究顯得十分重要，為了能直接對這種馬達進行壽命估計，並能在相同工況下求得壽命最長的軌道曲線，本文從設計等接觸應力內曲線的角度對這類馬達作探討性的研究，主要從以下四個方面進行： （ 1 ）綜合考慮徑向柱塞式液壓馬達工作時的各種主要受力狀況，對柱塞組件進行受力分析，並通過模擬分析影響軌道和滾動體間正壓力的各個因素，得到正壓力的簡化表達式。
  9. The first chapter generalizes the models of the phenomenon of the moral deterioration and points out the harm, while the second one analyzes the causes of this phenomenon and points out that the changes of the traditional journalism moral in the network environment contribute to the moral deterioration of network journalism, and the changes are mainly embodied in the following three aspects, that is, the main body, the control mechanism, and the heteronomy mechanism of journalism moral, hi the following two chapters, i research on the reconstruction of the moral of network journalism, including the macro - construction and the micro - construction

    論文共分為四章。在前兩章里，筆者就網路新聞道德失范問題進行了研究：第一章對網路新聞道德失范現象類型進行了歸納，並指出了其危害；第二章對失范現象成因進行了分析，指出傳統新聞道德在網路環境中的變化，正是網路新聞道德失范現象頻發的原因，而這些變化主要體現在新聞道德主體、新聞道德控制機制、新聞道德他律機制三方面上。
  10. Except that foreword and conclude the speech, the text is divided int o four parts first part : have originally studied and analysed encroaching right and subscribed question of the intellectual property right mainly partly, touch upon knowledge intellectual property right right range, encroach right kind and issue of asserting the method etc. i think i study the kind which should be studied the patent right first in patent infringement and protection domain

    除引言和結束語外，正文分為四個部分。第一部分：本部分主要研究和分析了知識產權侵權及其認定問題，論及知識產權權利范圍、侵權種類和認定方法等問題。在研究版權侵權方面，筆者首先論述了版權保護的客體范圍；其次是版權的權利范圍；然後論述了其侵權行為及認定方法。
  11. This article, taking competitive sports crime as the subject, conducts a systematic research from the angle of criminology. this article, by analyzing the connotation of competitive sports crime, holds that competitive sports crime refers to, in the process of competitive sports, the criminal offense ( regulated by the criminal law ) made by the sports participants and the impermissible behavior which has serious social harmfulness. by combing the present criminal behaviors in competitive sports of our country, this article induces the features and laws of this type of crimes, holding that competitive sports crime has five features : intentional, relevant, various,

    本文從犯罪學的角度對競技體育犯罪行為進行多維度研究，在總論部分從界定競技體育犯罪的概念入手，通過對當下競技體育犯罪現象的梳理，抽象出競技體育犯罪的特點和規律，並進而得出該類犯罪的真正原因包括社會原因和個體原因兩個方面，最終結合其犯罪特點和原因找到一條有效的預防犯罪的路徑，提出了從法律、管理、技術和倫理等四個方面對犯罪進行預防的一種綜合預防犯罪機制。
  12. The result corrected by former result was to judge the land to be suitable for cultivation or not. in the end, productivity index threshold under different suitable - levels was determined by analyzing the frequency histograms distribution of 4 productivity index. the result shows that the productivity index criteria of reserved land in beijing is that altitude 800 m, slope 15, soil depth 30 cm and gravel content 15 %

    在生產性指標方面，以北京市土地開發復墾潛力調查評價為基礎，運用相關分析、主成分分析確定指標為海拔、坡度、土層厚度和礫石含量；對指標進行聚類，根據聚類結果對原有評價結果進行修正並判定后備土地資源的宜耕性；通過分析多因素綜合作用下四項指標的頻率分佈情況，確定上述四個生產性指標在不同宜耕等級下的閾值。
  13. In this paper, we study and analysis the base distribution in human dna sequences. on the basis of the distribution sphere whose radius equal to 1 / 4 by zhang et al. expounded, with the method of plane mapping figure studying 6000 human dna sequences, and according to the figure of sierpinski gasket ' s patch and the brillouin zones of the face - centered cube, we obtain two new distribution figures, one is the frustum - octahedron, another is the regular - octahedron

    我們在zhangetal .提出的人類dna序列的堿基分佈為半徑是1 / 4球分佈的基礎上，用平面投影圖的方法研究和分析了6000組人類dna序列的數據，並且根據塞爾賓斯基鋪墊的補形和面心立方的布里淵區圖形提出了兩種新的分布圖，一種是正八面體，另一種是截角八面體（十四面體） 。
  14. These conclusions are expounded on the basis of the peculiarity of cube and regular tetrahedron of dna sequences, so they are rationalization, and they will be very useful in the study of the classification and the evolution of organisms

    它們都是根據dna序列的立方體和正四面體的性質而提出來的，有一定的合理性。本文的結論對人們研究生物體的分類和進化有著很重要的作用。
  15. Its characters and vigors are gifted by those who lived there. in this way, people are not only the main roles who realize the space. but also the main roles of activities. what kind of their life customs those people have and which ways they act in have become the main factor of the central space. therefore. all of traditional things in sichuan, such as the society and the history, the economy and the culture. the public contact and the customs of normal life and so on, certainly become the basis of our research associated with the central space of threshing ground in sichuan. but of the reseach to the regional and traditional architecture in region archtecture

    另一方面，中心空間是場鎮公共交往空間的一種類型，它自身的特色與活力系由場鎮中人們的活動所賦予，人是空間形成的主體，也是活動的主體，人的行為方式、生活習俗也就成為中心空間形態的決定因素之一。因而對四川場鎮中心空間的研究必然建立在對四川傳統社會歷史、經濟文化、交往活動等多方面的深刻分析的基礎上，而這正是地區建築學在針對區域傳統建築研究中的根本要求。
  16. According to the function organization system can be divided into bearing management function, bearing service function, having supervise function and the support organization ; the equipment system is constructed in two fields of the welfare hard equipment and the form of welfare service ; and norm system is divided into unrecorded informal system and recorded formal system. furthermore it particularly points out the importance to establish flexible management systems and operation mechanisms

    對組織系統根據各組織承擔的功能不同劃分為承擔管理職能的組織、承擔福利服務職能的組織、承擔監督職能的組織和承擔支援職能的組織四種類型；從福利的硬體設施和福利服務形式兩個方面對設備系統進行建構；而把規范系統分為不成文的非正式的規范系統和成文的正式的規范系統兩部分進行了分析。
  17. In chapter 2, we give some important properties of metapositive definite matrices, the expression of real and imaginary part about eigenvalues of real square matrices as well as the range of eigenvalues of real square matrices ( especially the range of their imaginary part ). on the other hand, we sum up, establish and extend some necessary and sufficient conditions of metapositive definite matrices roundly. in chapter 3, we give some important properties of complex positive definite matrices, the expression of real and imaginary part about eigenvalues of complex square matrices as well as the range of eigenvalues of complex square matrices. on the other hand, we sum up, establish and extend some necessary and sufficient conditions of complex positive definite matrices roundly. in summary, we discuss in terms of set theory the relation among real symmetric positive definite matrices, hermitian positive definite matrices and two types of generalized positive definite matrices - metapositive definite matrices and complex positive definite matrices

    第一章：除引入hermite矩陣、 hermite正定矩陣和實對稱正定矩陣較重要的性質外，還建立了它們的其它一些重要性質，尤其較全面地總結和建立了它們的若干充分和必要條件；第二章：建立了亞正定陣的一些重要性質，給出了實方陣的特徵值實部和虛部的表達式，並導出了實方陣的特徵值范圍尤其是導出了其虛部范圍，同時著重較全面地總結、建立和推廣了亞正定陣的若干充分和必要條件；第三章：建立了復正定矩陣的一些重要性質，給出了復方陣的特徵值實部和虛部的表達式，並導出了復方陣的特徵值范圍，同時著重較全面地總結、建立和推廣了復正定矩陣的若干充分和必要條件；全文小結：從集合論的觀點出發，對已討論過的四類正定矩陣? ?實對稱正定矩陣、 hermite正定矩陣、亞正定矩陣和復正定矩陣之間的關系作了比較細致的論證與探討。
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