立體對稱 的英文怎麼說

中文拼音 [lìtǐduìchèn]
立體對稱 英文
cubic symmetry
  • 立 : 動1 （站） stand; remain in an erect position 2 （使豎立; 使物件的上端向上） erect; stand; set up...
  • 體 : 體構詞成分。
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 稱 : 稱動詞（適合; 相當） fit; match; suit
  • 立體 : 1 （三維的） three dimensional; stereoscopic2 [數學] （幾何體） solid; body立體彩色電視 three dim...
  1. Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry.

    行星狀星雲是一類孤立的氣體星雲，具有相當程度的雙側對稱性。
  2. Two types of viral symmetry have been recognized, the cubical symmetry and helical symmetry.

    已經證實病毒有兩種對稱型，即立體對稱和螺旋對稱。
  3. Firstly, it introduced the import principium resolving thread and steps of analytic hierarchy process. secondly, it erected model of population modernization, which based on the steps of analytic hierarchy process. lastly, it got the maximal eigenvalue of dissymmetric matrix and corresponding eigenvector with sas, and normalized the eigenvector to get weight value

    本章分為兩部分，第一部介紹分析法的提出、原理以及解決問題的思路和步驟；第二部建立模型確定權重，根據層次分析法的原理和步驟，建立人口現代化指標體系的模型，運用sas求解所構造的非對稱判斷矩陣的最大特徵值，從而得出所對應的特徵向量，變形后得到權重。
  4. In order to solve this problem, we find a kind of herbages plant - sabaigrass ( eulaliopsis binata ) which not only can accommodate the badly environment of purple soil but also have excellent water and soil conservation effect and good economic benefit. this study adopt quantitative and qualitative methods, through comparative study of four different utilization types : sabaigrass treatment, grass tree solid plating treatment ( planting sabaigrass under fruit trees treatment ), bare land treatment, natural wild grassland treatment, study water and soil conservation effect, soil water condition, soil constructors condition, soil fertility condition and soil surface temperature, then evaluated the water and soil conservation effect of plating sabaigrass in purple soil bare sloping field and probed into water and soil conservation mechanism. the main results are as follows : 1

    本研究針對湖南省衡邵盆地紫色巖地區日益惡劣的生態環境，從紫色土荒坡地水土流失治理入手，在尋求出既適應紫色土荒坡地惡劣環境又有良好水土保持作用和一定經濟效應的作物? ?龍須草的基礎上，用定性和定量相結合的方法，以「龍須草純種」 、 「龍須草與果樹立體種植」 （簡稱林草立體種植，下同） 、 「空曠地」 、 「自然野生雜草地」四種不同的土地利用方式進行對比研究，從水土保持效應、土壤水文狀況、土壤結構、土壤肥力狀況、地表溫度狀況等方面分析、評價紫色土荒坡地種植龍須草防治水土流失的效應，並對其機理進行了初步探討，主要研究結果如下： 1
  5. Consisting of the protracting graph of hydrogen - like atom ' s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, bravias ' s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, computer simulation of phase analysis by x - ray diffraction

    內容包括類氫原子角度分布圖的繪制，分子軌道對稱性和反應機理的微機模擬，分子點群和對稱元素顯示，分子振動運動的微機模擬，布拉維晶格和晶格轉化，平面點陣抽取，立體點陣抽取，等徑網球的密堆積和金屬單質結構，不等徑圓球密堆積和典型離子晶體結構， x射線多晶衍射的微機模擬十個子模塊。
  6. Unfortunately, the numerating model used in such method is quite different from the actual instance, and the constraints are to o simple, the effects of the side load, elastic modular of the stone body of the foundation and the compatible structural deformation are not involved in. due to the asymmetry of the spatial load, it is quite different between the analysis results and the test data

    這種集中計算方法力學模型的建立與結構的實際受力情況出入較大，且對邊界條件考慮過于簡單，對邊荷載的影響、基礎巖體彈模的影響及結構本身變形協調一致等均未能一併考慮，對于空間受力不對稱的狀況，作為二維問題分析時計算結果與應力測試結果出入較大。
  7. Then, the navier - stokes equations for 2 - d axisymmetric compressible turbulent flow were constructed and phoenics was used to simulate the 2 - d axisymmetric compressible turbulent flowfield of rocket jet

    其次，建立了二維軸對稱可壓縮湍流流動的平均navier - stokes方程，並利用phoenics軟體對二維軸對稱火箭噴流進行了數值模擬。
  8. Secondly, the formula of the shock front of the spherical wave in the air is extended to the model of circumrotated ellipse and the process of the shock front of in the water in term of the transmitting characteristic of the laser plasma shock wave in the air

    其次，從空氣中激光等離子體沖擊波波前的傳輸特性出發，將空氣中點源爆炸球面沖擊波波前衰減傳播公式推廣到非中心完全對稱情況，提出旋轉橢球面沖擊波前傳播公式；建立水中的激光等離子體沖擊波波前衰減傳播模型。
  9. In may, 90 kinds 180 trees of roses compete for beauty in the gardens designed by josiah condor, combined with the french symmetrical garden with geometrical topiary designs and the stereoscopic italian terrace garden with stone parapets, steps and flower bowls. the combination of western house and roses in the lights create a picturesque view to please our eyes

    在5月份， 90種180株的薔薇花競相開放，由康德設計的左右對稱的幾何學圖案修剪的法國整形式庭園及石欄桿和石段、水盤等，立體的義大利露壇式庭園的技法重疊在一起的西洋館和被燈飾裝點的薔薇，呈現出一幅美妙絕倫的圖畫。
  10. To improve the accuracy of node trust evaluation in a distributed network, a trust model based on the experience of individuals is proposed, which establishes a new trust assessment system by introducing the experience factor and the comparative experience factor. the new evaluation system considers the differences between individuals and interactive histories between nodes, which solves the problem that nodes have inaccurate assessments due to the asymmetry of nodes to a certain extent. the algorithm analysis indicates that the new model uses different deviating values of tolerance evaluation for different individuals and uses different updating values embodying node individuation when updating feedback credibility of individuals, which evaluates the trust value more reasonably and more accurately. in addition, the proposed algorithm can be used in various trust models and has a good scalability

    為了提高分散式網路中各節點信任評價的準確度，提出了一種基於個體經驗的信任模型.該模型通過引入經驗因子和相對經驗因子的方法，建立了新的信任評價體系.這種新的信任評價體系考慮了個體節點的差異問題，在計算節點的信任值時考慮了節點間的交互歷史，這在一定程度上解決了由於節點的非對稱性而導致的信任評價不準確的問題.演算法分析表明:新模型能夠針對不同的個體節點，採用不同的最大容忍評價偏差，並且對個體節點的反饋可信度進行更新時，採用不同的更新值，體現了節點的個性化特徵，使信任評價更加準確合理.此外，所提出的新演算法能夠運用到多種信任模型中，具有很好的可擴展性
  11. Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed

    帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應
  12. Secondly, actions between banks and enterprises in china ' s credit market and the motivation of banks " deregulation are deeply analyzed by the means of the game theory. thirdly, the thesis studies how systematic factors in china aggravate the information asymmetry in the credit market from the aspects of property right, financial supervision and information announcement. at last, suggestions on how to dissolve the bank credi t risk and prevent non - performing banking assets increasing are put forward in the aspects of improvement of information symmetry, establishment of incentive and constraint mechanism and elimination of systematic factors which aggravate the information asymmetry

    首先，論文分析了我國信貸活動中的信息不對稱所產生的逆向選擇與道德風險對銀行資產質量的影響；其次，作者運用博弈論方法對我國信貸市場中銀行與企業的博弈行為以及銀行違規的動力進行了深入地分析；接著，論文又從產權、金融監管和信息披露這三個方面研究了我國的體制性因素如何加劇信貸市場的信息不對稱問題；最後，論文從提高信貸市場的信息對稱度、建立有效的激勵約束機制以及消除加劇信息不對稱的體制性因素這三個方面對化解我國銀行信貸風險、防範銀行不良資產的新增提出了建議。
  13. To avoid such discreditable behavior, information disclosure must be perfected, channels of information transfer cleaned off, systems of property right reformed and cleared, and the system of credit management for the whole society set up so that the income of credit equals to the cost of fraud

    而要控制失信行為必須完善信息披露制度，暢通信息的傳遞渠道，加快產權制度的改革，明晰產權和建立全社會的信用管理體系，使信用的收益和欺詐的成本相對稱。
  14. Now, it is worthwhile to conduct the research on the ground load of landing gear with multi - wheels and multi - struts according to the basic theories of the mechanics, the dynamics analysis model of the full - aircraft during its landing process is established in this paper

    本文首先以某多輪多支柱飛機的起落架作為研究對象，應用動力學基本原理，建立了全機的著陸動力學模型。然後，通過利用大型動力學模擬軟體adams對該飛機進行了對稱著陸模擬，並對模擬結果進行了對比分析。
  15. Fitts " law was extended to two - dimensional polar coordinate system, and based on this, a method on human movement quality evaluation was proposed. indices of gait symmetry, indices of difficulty and indices of performance for human upper limbs were defined and combined with other indices to form a set of systematic indices of movement quality evaluation

    將fitts定律推廣到二維極坐標下，並以此為基礎建立了矢狀面內的人體運動質量評定方法，定義了上肢運動的難度指標、執行度指標和下肢運動的對稱性指標，提出了一套能反映運動質量各方面情況且具有普遍意義的運動質量評價指標。
  16. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。
  17. Comparing and analyzing the synchronous control strategy, which brings up the new method to control the double un - symmetry jars proceed synchronously with the combination of proportional valve and servo valve, which forms closed loop control ; basing on the above methods, models are made to get mathematics models of position control system and to analyze system model theoretically by using pid controller, we can realize regulating parameters, minimizing synchronous errors and enhancing the dynamic performances ; the simulink tool box in matlab software is used to imitate the system according to the model, which not only makes the result visual and easy to adjust the parameters in interactive way but also lets us understand the effects of different parameters and optimizes the dynamic properties. the theory of plc control in dshp is discussed after advanced understanding of the system movements. hardware design and general regulation are given on the base of siemens company products s7 - 200 plc

    本文根據大量的國內外文獻，對研配液壓機的工作原理及設計結構進行了簡介；對位置同步的控制方法進行了比較分析，提出比例閥和伺服閥復合控制的閉環結構來對非對稱雙缸進行同步控制電液比例同步控制方案；在此基礎上著重對比例閥控非對稱缸建模，最後得到位置控制系統的總體數學模型，從理論上對同步系統動態特性進行了分析，並用pid控制器進行參數整定，減小雙缸同步誤差、提高系統的動態響應性能；其中控制性能的分析藉助于matlab軟體中的simulink工具箱，由已建立的數學模型形成模擬模型，得到可視化的模擬結果，從而利於交互方式下調整參數，了解不同的參數對系統的影響，優化同步系統的動態性能；在深入了解系統的動作特性后，對plc控制研配液壓機的原理進行了探討，針對siemens公司s7 ? 200型plc給出了硬體設計的總體規劃，編制出研配液壓機動作控製程序，在編程中著重研究位移傳感器與plc的通訊、雙缸同步運行的pid控制在plc上的實現及bcd碼撥盤輸入程序的植入問題。
  18. To predict the settlement of surrounding soils during excavation, axisymmetric model was established in fem software to analyze the problem by use of fem based on the biot ' s consolidation theory

    為預測基坑開挖及降水過程中周圍土體的沉降，本文採用基於比奧固結理論的有限單元法在大型有限元軟體中建立軸對稱模型進行了分析。
  19. Indexing conveyor machinery, application of three - dimensional symmetric cam, can provide the proper positioning. can be set rotation, with the increased time

    分度輸送機械，應用立體對稱凸輪，可提供正確的定位。可設定旋轉、升高的配合時間。
  20. Swinging transportation machinery, application of three - dimensional symmetric cam, can provide the correct position regularly. can be set rotation, with the increased time

    搖擺輸送機械，應用立體對稱凸輪，可提供正確的定時定位。可設定旋轉、升高的配合時間。
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