theoretical zero 中文意思是什麼

theoretical zero 解釋
理論發育零點
  • theoretical : adj. 1. 理論（上）的，學理上的 （opp. applied）。2. 假設（性）的；純理論的，推理的。3. 空論的 （opp. practical）。adv. -ly
  • zero : n （pl zeros zeroes）1 【數學】零；零號。2 零位；零點，起點；（溫度表的）零度，冰點；座標原點；無...
  1. In quantum chromodynamics ( qcd ), vacuum is not trivial, that is, vacuum carry quantum numbers. such a behavior is embodied by non - perturbative con - densates of quarks and gluons. since hadrons are excitations with respect to the vacuum, hadronic properties are ultimately related to properties of the vacuum. based on the vacuum structure, some hadron properties have been described well. in the low energy region, qcd has two very important proper - ties : chiral symmetry spontaneous breaking and confinement, which are closely related to the vacuum characteristics of qcd. much experiments and theoretical studies have shown that chiral symmetry spontaneous breaking is very important to understand the low - energy feature of the strongly interacting physics, and the quark condensates give an expression to chiral symmetry spontaneous breaking. according to goldstone ' s theorem, the goldstone bosons with zero mass will emerge as the chiral symmetry is spontaneously broken. there are two ways : inear and non - linear methods to carry out this constraint. in our paper, we will use the non - linear method

    大量實驗和理論研究表明，手征對稱自發破缺對于理解低能強相互作用十分重要，而夸克凝聚又是導致手征對稱自發破缺的因素。按goldstone理論，伴隨手征對稱自發破缺應該會有零質量的goldstonebosons產生。而對于這一條件的實現有線性和非線性兩種方法本文將用非線性的方法將手征對稱自發破缺應用於su （ 3 ）模型即重子八重態，得出描述其強相互作用的手征對稱自發破缺lagrange密度。
  2. A novel phase - shifted zero - voltage and zero - current switching pwm dc / dc full - bridge converter is presented in this thesis, which is based on the groundwork of summarization of the development of power electronics in recent years and lucubration in theoretical basis of modern high frequency soft switching power convert technique and analysis of operation principle, characteristic of the circuit and inherent drawbacks of the traditional phase - shifted zero - voltage switching pwm dc / dc full - bridge converter

    本文在對近年來電力電子學科的發展高度綜述和對現代高頻軟開關功率變換技術理論基礎深入研究的基礎上，對傳統的移相控制zvspwmdc dc全橋變換器的工作原理、電路特性、存在的缺點進行了分析，在此基礎上提出了一種改進型的移相控制zvzcspwmdc dc全橋變換器。
  3. This thesis adopts empirical research methods, with changjiang communication navigation bureau as a study object, under the guidance of the public financial theory and with zero - base budget idea and activity - based costing system applied ; it provides the general thought by which we investigate each itemized outlay ration standards using the method of sourcing " the chain of the reason of necessary cost " and provides the idea of distributing the common cost in the light of the actual time of the non - commonweal and commonweal communication, researching the method of investigating the budget ration standards of over - water commonweal communication institutions. the research harvest has important theoretical and practical sense to the over - water commonweal communication institutions when making budget

    本文採用實證研究的方法，以長江通信導航局為研究對象，在公共財政理論的指導下，運用零基預算和作業成本法的基本思想，研究了水上公益通信單位預算定額標準的測定方法，通過追溯「必要費用成因鏈」來測定各項費用定額標準和根據非公益性通信與公益性通信實際發生時間來分攤共同費用的思想，研究的成果對水上公益通信單位編制預算具有重要的理論和實踐意義。
  4. We think that the main contributions of the book is in two aspects : one is the revolution of some concepts such as utility theory, aximatization of game, extended game ; the other is the breaking through in zero - sum two - person games centered on minimax and corporation game centered on characteristic function. this was, in fact, the development and extension of von neumann ' s classic game paper of 1928. our research shows that these contributions were a pure new theoretical creation, rather than an

    認為《博弈論與經濟行為》的主要貢獻有二個方面：一個方面是在效用理論、博弈的公理化、博弈的擴展形式等等概念上的創新，另一方面是在以極小極大值定理為中心的三人零和博弈理論和以特徵函數為中心的合作博弈理論上的創新，這些實際上主要是馮?諾伊曼對其1928年的經典博弈論文章的理論框架的發展和延伸
  5. The fine - structure constant is an important zero dimension constant in the atomic physics. this article introduces the origin of fine - structure constant, and discusses its physical significance, and theoretical calculation

    摘要本文介紹原子物理學中重要的無量綱常數之一的精細結構常數的由來，討論它的物理意義和理論計算。
  6. Theoretical analysis shows that the observation error converges to zero

    理論分析證明觀測器的觀測誤差收斂到零。
  7. Theoretical models were used to predict the effects of microcrack - density to effective tensile modulus of cf / ep laminates for long - term duration exposure for it difficult to get from tests. a uniaxial zero - expansion model was established based on the analysis of thermal stress and the coefficient of thermal expansion of the laminates

    由於受到試驗周期的限制，對于長期暴露于空間環境中的層合板材料，其有效拉伸模量很難用試驗方法直接測量，本文採用理論模型進行分析。
  8. The mrafc scheme employs a reference model to provide closed - loop performance feedback for generating or modifying a fuzzy controller ' s knowledge base. the adaptive compensation term of optimal approximation error is adopted. by theoretical analysis, the closed - loop fuzzy control system is proved to be globally stable, with tracking error converging to zero

    該方案利用參考模型作為閉環系統的反饋信號來產生、調節模糊控制器的規則庫，並通過引入最優逼近誤差的自適應補償項來消除建模誤差的影響，不但能保證閉環系統穩定，而且可使跟蹤誤差收斂到零。
  9. Object in relation to the theoretical, zero - width line

    指定相對于理論上、零寬度的線條的
  10. Then, the numerical calculation to the reflection light spectrum is deduced by utilizing berremam ’ s 4 4 matrix, which will supply theoretical gist to the following experiments. at last, the psct with better planar structure is achieved, and the psct is bistable at zero field

    本論文首先簡要介紹了膽甾相液晶自身特有的光學特性，然後利用berrenman 』 s4 4矩陣方法對膽甾相液晶的反射光譜進行了數值理論計算，從而為下一步製作psct提供了理論依據。
  11. The theoretical analysis show that the nonlinear absorption for the probe light in the coherent atoms increases rapidly from zero to the steady state through a transient process when signal light is switched on

    計算表明在信號光開啟后的瞬間，介質對探針光的非線性吸收從接近於零的狀態迅速增加，經過一個短暫的瞬態過程到達穩態。
  12. Based on both quantitative calculation and theoretical analysis, the magnetically strong and electrically weak connection of power networks and its impacts on the behaviors of zero sequence pilot protection are studied in detail, the reasons and characteristics of the misoperation are summarized, some typical power network topologies that are prone to misoperation are analyzed, and several countermeasures for eliminating the influences of mutual inductance on zero sequence pilot protection are proposed for the sake of the increasingly meshed power networks

    從定量計算和理論分析的不同角度，本文深入研究了強磁弱電聯系的網路關系及其對縱聯零序保護動作行為的影響，總結了保護誤動原因和特點，分析了可能發生誤動的典型電網結構形式，並針對當今越來越緊密聯系的電網，提出了幾種解決互感對縱聯零序保護動作行為影響有效的措施。
  13. Through theoretical analyses, the zero - phase - sequence current is the reason of the metering error

    理論分析這一誤差的產生是由於零序電流的存在。
  14. The theoretical analysis and experiment outcome indicate that geomagnetic field and testing environment have momentous effect on testing outcome, that specimen should be laid transmeridionally as soon as possible while testing and that the swing value and crossing zero line of metal magnetic memory signals before and after fatigued specimen cracking will change or move

    理論分析和實驗結果表明：地磁場和檢測環境對檢測結果會產生較大影響，檢測時應盡可能將試件東西方向放置；疲勞試件斷裂前後的磁記憶信號的幅值和過「 0 」線將發生變化。
  15. This article has analyzed the strain gauge fatigue law, it has carried on the confirmation through the experiment ; summarized inferring the weary condition principle and the method of the strain gauge from the zero creep and the sensitivity rate of change theoretical formula

    摘要分析了應變片疲勞規律，並通過實驗進行了驗證；總結出了利用零點漂移和靈敏度變化率理論公式推斷應變片的疲勞狀況的原理和方法。
  16. This paper is the theoretical summary of the development around the dynamic positioning system by the writer, which includes several aspects of the studies as follows, 1. in allusion to the feature of zero - speed of the ship in positioning control process, the dynamic mathematics model of the ship ' s movement has been established, which fits to the dynamic positioning, and the mathematics model of the environment of sea and ocean which disturbs the ship in dynamic positioning, which has founded the base of further study

    本文是作者以rov工作母船為背景，圍繞動力定位系統的開發工作所做的理論研究工作，主要包括以下幾個方面的研究工作： 1 ）針對處于定位控制的船舶工作在零航速附近的特點，建立了適合於船舶動力定位系統研究用的船舶低頻運動模型，為滿足控制器設計的需要，建立了船舶高頻運動模型和海洋環境作用模型，為以後的分析奠定了基礎。
  17. Simulation studies illustrate the effectiveness and robustness of the schemes. secondly, according to the results gained in the first part, an adaptive sliding mode controller for a class of large - scale decentralized systems is designed. by theoretical analysis and the simulations, the closed - loop decentralized adaptive control system is proved to be globally stable with tracking error converging to a neighborhood of zero

    第二部分針是對一類大系統的分散自適應控制問題，運用第一部分已取得的成果，提出了一個分散穩定自適應控制器，經過穩定性分析，證明了該控制器能夠保證被控系統閉環穩定，系統的跟蹤誤差將收斂到零的某一較小的領域內，模擬試驗也表明了本部分所提出的策略是正確有效的。
  18. Based on engineering experience of the author and theoretical experience, the physical and geometry delay from feed center to off - set element under near - field environment is compared and discussed, and the influence of near - field conditions on zero - range calibration is analyzed, and satisfactory results have been got

    筆者綜合了以往的工程與理論經驗，在近場條件下討論了由饋源中心到偏饋振子的物理、幾何時延，分析了近場條件對距離校零的影響，得出了令人滿意的結論。
  19. With interest income of hk 1. 9 trillion of hong kong dollar deposits climbing out from near zero and expectations of favourable movements in property prices, the theoretical restraining effect of rising interest rates on household spending and housing investments, if any, may be quite mild

    加上接近一萬九千億港元的港元存款的利息收入原本幾乎是零，而現在可能會增加，而且預期物業價格走勢向好，因此相信即使利率上升理論上對家庭支出與住屋投資有抑制作用，所造成的影響亦會比較溫和。
  20. Some microscopic theoretical analysis indicates the branching ratio of the transitions near zero degree is not sensitive to the halo structure. the complete angular distribution of the " h ( 6he, 6li ) n reaction has to be measured to reveal the halo structure of the second exited state of 6li

    有的微觀理論分析表明， 0附近的該躍遷強度比對是否存在暈結構不敏感，要想揭示~ 6li第二激發態的暈結構，應該測量~ 1h （ ~ 6he ， ~ 6li ） n反應完整的角分佈。
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