環式子空間 的英文怎麼說

中文拼音 [huánshìzikōngjiān]
環式子空間 英文
ringed subspace
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 空間 : space; enclosure; room; blank; interspace
  1. Depend on the comprehensive analysis and study of the structure, principle, and exterior characteristic of the motor, through the methods of system modeling and digital simulation analysis, two kind of control device that work for the low voltage ( lvdc ) and the high voltage ( hvdc ) in avigation are researched respectively. point to the control technique of close - loop speed stabilization at a limited adjustment speed range, we bring out the close - loop speed control method that using the rotor position sensor indirectly measure the speed of the motor

    在全面分析了稀土永磁無刷直流電動機的結構特點、工作原理、運行方式以及外部特性的基礎上，通過系統建模和數字模擬分析，分別針對航空低壓直流（ lvdc ）和高壓直流（ hvdc ）兩種電動機構用永磁無刷電動機，在小范圍轉速連續調節下的閉環穩速控制技術進行了詳細理論研究，提出了利用轉子位置傳感器信號間接測量電機轉速進行電機轉速閉環穩速控制的策略。
  2. Abstract : in this paper, the environment of charged particle from cosmic ray which can induce the hard and soft error on micro - electronics was discussed. employing widely used model and our latest work, we calculated the distribution of cosmic ray in low earth orbit and discussed the model and its application

    文摘:本文主要討論了在近地空間能夠引發微電子系統故障的宇宙線帶電粒子環境問題，參照國外轅為成熟的模式和我們最新的工作，對近地軌道的宇宙線強度進行了計算，並就模式的應用和存在的問題進行了討論。
  3. When used in multidisciplinary environment, csso has several advantages over standard optimization method : reduction of the information transfer ; elimination of large iteration loop ; allowance of the use of corresponding subspace optimizers in different disciplinary analysis ; a parallel optimization architecture which is readily operable on a suite of heterogeneous equipments ; more natural fit to the current organization structure found in most institutes of aerospace and aeronautic design ; participation of the disciplinary experts to best deal with specific disciplinary models

    當應用於多學科設計環境時，并行子空間優化方法相對傳統優化方法有幾大優點：減少了學科間信息傳遞的數量；免去了大的迭代循環；允許在不同學科分析模塊中應用不同子空間優化器；可以在不同設備上并行運行；結構框架適用於傳統學科組織形式；允許各學科專家最大限度地參與學科分析和設計。
  4. Biodiversity exists among am fungi and is influenced by numerous factors including soil properties and plant species. if am fungi are to be used in sustainable agricultural systems it is necessary to study native am fungi in the target areas and then select efficient isolates that can be applied as inocula in the field to improve crop growth. the objectives of this study were to investigate the germplasm of am fungi, to understand the distribution pattern of am fungi in different ecological conditions such as area, soil factor and host plant, to select isolates effective in nutrient acquisition by the host plant sweet potato, to test their effectiveness under field conditions, and to monitor amf after their introduction into the field

    本研究通過調查我國北方部分地區的am真菌資源，研究了am真菌的種群組成及其在空間、土壤利用方式和宿主植物類型等不同環境條件和空間尺度上的分佈規律；在此基礎上，根據它們對甘薯的生長、吸磷效應篩選出高效菌株，在大田條件下研究了am真菌菌絲的分佈特性、代謝活性及其對甘薯產量和品質的影響；並通過分子探針跟蹤調查了引入am真菌在共生體中的發育和表達，以期為菌根真菌的生產應用提供技術支持。
  5. The fact that the contents of a whole library can be stored on a single chip, or the fact that a single library can now store the digital content of all libraries, together represent potential re - thinking : new forms of storage enable the space dedicated to real books to be contained ; new forms of reading enhance the aura of the real book

    事實上，整間圖書館的資料已經可以儲存在一小片的晶片上，又或是光單獨一間圖書館就可以使用電子媒介來儲存所有圖書館的資料，這樣的情況讓我們重新思考：新型態的儲存模式可以有更多的空間來放置書籍，新型態的閱讀模式也加強了書本的光環。
  6. This paper makes the feasibility design and study of the dtc ( direct torque control ) system based on analyzing some important parts, such as the arithmetic model of asynchronous motor in - coordinates, the choice of voltage vectors, and flux - linkages models, etc. the research work in this paper is described as follows : 1 analyzing of the dtc theory : material about the development and theory of dtc, the composing of dtc - system are presented in this paper

    本文在詳細分析了定子坐標系下的異步電動機數學模型、電壓空間矢量和磁鏈觀測器的基礎上，利用直接轉矩控制技術，構建了基於dsp的直接轉矩控制系統。論文的主要工作包括以下三個方面： 1直接轉矩理論分析研究：針對直接轉矩控制理論在低速范圍轉矩觀測器和轉速波動等問題，採取了滯環模式切換，矢量細分等改進措施。
  7. Exploiting space resourcex sea resource and atomic energy will be a very important mission in 21st century, but these special environments are dangerous to mankind, so we have to make use of tele - operation

    開發空間資源、水下資源和原子能資源是面向21世紀的重要任務，但這些特殊環境對人類有生命危險，因此必須採用遙控操作方式。
  8. All room it allocates to be as follows, message system of the language mailbox ; adjustable changes in temperature system independently ; electronic lock ; color tv set with remote controller ; international satellite tv programme : cnn, nhk, wowow, deusche welle, chinese taiwan of hbo, satellite tv, sports station, music radio, phoenix s platform, australian platform, cnbc and hbo free movie channel, etc. ; ice box and mini - bar ; make coffee and tea apparatus by oneself ; in addition set up the floor especially smokelessly, offer a living environment with the pure and fresh air to guest not smoking

    所有房間配備有：語言信箱留言系統獨立可調式冷暖系統電子門鎖帶有遙控器的彩色電視機國際衛星電視節目： cnn ， nhk ， wowow ， deusche welle ， hbo衛星電視中文臺體育臺音樂臺鳳凰臺澳大利亞臺cnbc和hbo免費電影頻道等冰櫃及小酒吧自製咖啡與茶設備另外特設無煙樓層，為不吸煙的客人提供一個空氣清新的居住環境。
  9. Lithium ion batteries have many excellent performances among the chemical power sources such as the highest work voltage and energy density, longer cycle life and better safty, etc., which make them show the wide prospects of application and latent enormous economic effectiveness in many respects, for example, portable electric devices, electromobile, space technology, national defence industries, and so on

    鋰離子電池具有高工作電壓、高比能量、循環壽命長、安全性能好等諸多優異的性能，從而在便攜式電子設備、電動汽車、空間技術、國防工業等多方面展示出廣闊的應用前景和潛在的巨大經濟效益；而高性能的鋰離子電池陽極材料的制備及性能研究是目前鋰離子電池開發乃至應用的關鍵因素之一。
  10. At present, the study on tax planning in china is much more thorough in transnational corporation than in the domestic. this paper base itself upon the weaker area, which studies on the establish form of enterprise, the way of investment, the area of investment, the trade of investment in domestic investment and the choice of host countries, the choice of branch organization and son corporation in the overseas investment according to the basic theory of tax planning and the chinese tax law

    本文選題立足於這一薄弱環節，先明確稅收籌劃的涵義和稅收籌劃空間，然後緊緊圍繞我國企業的投資活動，根據稅收籌劃的一般原理和我國現行稅法的具體規定，對我國企業國內投資中的企業組建形式、投資方式、投資地區、投資行業和國外投資中的東道國選擇、分支機構與子公司的選擇等方面的稅收籌劃展開研究。
  11. Numerical result shows that the new method is more efficient in convergence than the standard lanczos algorithm ; the second algorithm generalizes the implicitly restarted arnoldi ( ira ) augmented by soreesen to the implicitly restarted lanczos algorithm, which improves the convergence rate of lanczos algorithm by making good use of the spectral information obtained from the previous process. the last algorithm utilizes deflation strategies to the second algorithm to forming invariant subspace for a, so that the stability can be kept in computing process

    數值試驗表明，該演算法比標準lanczos方法具有更好的收斂性；第二種演算法是將求解特徵值問題的隱式循環arnoldi方法（ ira ）應用於求解對稱不定線性方程組的lanczos演算法，充分利用lanczos演算法過程中的譜信息，確定預處理；第三種演算法是在第二種演算法的基礎上，運用收縮技巧，形成近似不變子空間，以提高收斂速度和數值穩定性。
  12. Based on the general conception of holography, the author analyzes the tourism region with a holographic view of human - nature relationship, and considers, in the core, the origination, development, transformation of tourism region system is a course in which the resources system is transformed to the economic system ， to the cultural system, which demonstrates by the structure of tourism region objection system ? ? from the structure of tourism resources to the structure of tourism products ， to the structure of the tourism markets ， to the structure of tourism industries, and each step of transformation needs the input of anti - entropy from the subjection system ? ? the tourists, the tourism scholars, the tourism enterprising, the tourism media, the government and the local people who urge the region sustainable development. there are six chapters in the dissertation : in the first chapter, on the base of holographic view, the author constructs a holographic space which consists of one - dimensioned time, three - dimensioned space and multi - dimensioned system, which can supply for the study of variety and multi - perspective of tourism region subsystem, meanwhile originationable theory, fractal theory and down - to - the - earth theory are put forward as methodology, what ' s more, the author constructs the paradigm of the tourism region development as the frame of region tourism development. in the second chapter, with a holographic view, some concepts of tourism region system, both objection system and subjection system, are defined again, especially, the conception of tourism, tourist, tourism resources and tourism product, the author considers, it ' s only through information that can explain how the tourism derived and developed, what the tourist demands and utility are, and the relationship between the inner subjection system is regarded as mutuality

    本論文結構共分6個部分：第一部分，從全息學的基本觀點出發，構建出由一維時間、三維空間和多維系統組成的全息空間，這為研究旅遊地域各子系統的多樣性和多角度性提供了理論的依託，並將元化思考、分形理論和紮根理論作為旅遊地域開發的主要方法論，構建出旅遊地域全息開發的思維範式，為旅遊地域的開發奠定了堅實的理論框架；第二部分，從全息角度對旅遊地域系統，包括客體系統和主體系統，進行全新的界定，尤其對旅遊活動、旅遊者、旅遊資源及旅遊產品的概念進行全新界定，認為只有從信息角度才能理解旅遊活動產生、發展以及旅遊者的需求和效用，並在旅遊地域開發關繫上提出了互為主體的觀念；第三部分，從空間角度對旅遊地域進行分析，認為旅遊地域是運動的，要素運動形成要素的結構變化，進而推動整個旅遊地域的運動，同時，旅遊地域運動還受到環境系統的制約和影響，筆者還對旅遊地域相互作用關系作了較為深入的研究，認為不同等級間和同等級間旅遊地域相互作用遵循不同的規律；第四部分，通過對旅遊地域周期理論的再認識，詳細分析了影響旅遊周期的因素，並提出旅遊地域全息周期的理想模式是logistic曲線；第五部分，筆者對旅遊地域的開發模式進行了總結，從主體角度提出了4種旅遊地域全息開發模式? ?資源主導型、學者主導型、企業媒體主導型和政府大眾主導型，並從環境系統對旅遊地域開發的影響程度出發，提出2種修正模式? ?微阻礙模式和重阻礙模式；第六部分，以安西縣為例，在全息分析安西縣旅遊地域發展狀況之後，強調旅遊產品的開發與設計是旅遊地域開發的關鍵，並運用全息的觀點對旅遊產品開發進行了實證研究。
  13. In dtc system, the concept of space vector is introduced to analyze and control the ac motor, the electromagnetic torque and flux are caculated and controlled in the stator reference frame, and the optimal pwm gating signas are generated to control the inverter according to the output of the bang - bang regulator. in this paper, the dtc system is designed based on dsp. a speed estimation method is derived detailedly and the sensorless speed close - loop control is conducted. in this system, there are some problems, such as flux drift and torque ripple. to resolve these problem, a modified flux caculation method and some measures such as speed lpf, torque slide filtering are adopted. the system performance is enhanced by these mersures

    直接轉矩控制採用空間矢量的概念來分析異步電機的數學模型和控制其各物理量，直接在定子坐標系中計算和控制轉矩和磁通，藉助于離散的兩點式調節（ bang - bang控制）產生pwm信號，直接對逆變器的開關狀態進行優化控制，以獲得轉矩的高動態性能。本文採用dsp設計了直接轉矩控制系統，詳細推導了速度估計方法，進行了無速度傳感器的速度閉環控制。
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