characteristic constant 中文意思是什麼

characteristic constant 解釋
特徵常數
  • characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
  • constant : adj 1 恆定不變的，固定的，穩定的，恆久的；繼續不斷的。2 不屈不撓的，堅韌的。3 忠實的，有節操的。n...
  1. Constant companions are added to the character taxa to form the " characteristic species combination " for associations and higher taxa

    恆有伴生種加特徵種構成群叢或更高級分類單位的「特徵種組合」 。
  2. The high dielectric constant is characteristic of hydrogenbonded liquids.

    高介電常數具有氫鍵液體的特徵。
  3. The relations between piezoelectric characteristic such as piezoelectric constant, electromechanical coupling coefficient, mechanical quality factor, etc. and its components, granular diameter and manufacturing technology were studied

    研究壓電材料壓電常數、機電耦合系數、機械品質因數等特性與其組份、顆粒直徑及製作工藝過程之間的關系。
  4. Constant companions are added to the character taxa to form the "characteristic species combination" for associations and higher taxa.

    恆有伴生種加特徵種構成群叢或更高級分類單位的「特徵種組合」。
  5. The balanced multiwavelet was studied. for low - pass matrix filter p ( ), the orthogonal matrix r was selected to ensure the constant signal as a characteristic signal of balanced low - pass matrix filter rtp ( ) r, the corresponding balanced high - pass matrix filter is q ( ) r or rtq ( ) ) r which maintain the orthogonality and symmetry or orthogonality only respectively. as an application, the optfr - multiwavelet constructed by jiang was balanced and applied to image denoising and fusion

    研究了多小波的平衡處理，對低通濾波器p （ ）一般選擇平衡器為正交矩陣r ，使得常數信號成為平衡后的低通濾波器r ~ tp （ ） r的特徵信號，若要保持矩陣濾波器的正交性和對稱性，可選擇平衡后的高通濾波器為q （ ） r ；若只保持多小波的正交性，可選擇高通濾波器為r ~ tq （ ） r 。
  6. The author thinks the disappearingconstantly of objective cultural characteristic, the frequency day by day of the internationalities exchanging and ethnicity interacting, the constant increaseof the orientation of utility at ethnicity acknowledgement and " legal " national attribute impact to the jing ' s acknowledgement, make jings ' ethnicity acknowledgement in hai village face to the crisis of stating

    認為，客觀文化特徵的不斷消退，族際交流與族群互動的日益頻繁，族群認同上功利性取向的不斷增加以及「法定」的民族屬性對京族認同的沖擊，使海村京族人的族群認同面臨表述上的危機。
  7. Sine sweeping constant current exciting for geophone characteristic parameter measurement and identification

    地震檢波器特性參數識別的一種新的正弦掃頻恆流激勵方法
  8. Constant output characteristic is performed by voltage feedback, and the dynamic characteristic control of power supply is realized by modifying the reference voltage in di / dt feedback loop

    利用電壓負反饋實現所要求的平外特性。對電源動特性的控制通過改變反饋電路中的給定焊接電壓實現。
  9. With the constant development of the enterprise information system, more and more users need a lot of different data which construct the database visiting and deal with different network nodes at the same time, hope shielding no. each different to construct characteristic, they know physics database the distributions of systems, know physics the structures of databases form, oneself need n ' t go and carry on data change and gather with the result, only need to inquire about and can receive a result of synthesizing through simple and convenient the overall situation

    隨著企業信息系統的不斷發展，越來越多的用戶需要同時訪問和處理不同網路節點的多個異構數據庫的數據，希望屏蔽各個層次的異構特性，他們不必知道各個物理數據庫系統的分佈，也不必知道各個物理數據庫的結構組成，不必自己去進行數據轉換和結果匯總，只需通過簡便的全局查詢便可得到一個綜合結果。
  10. In theory, the noise elimination capacity is calculated by the method which the characteristic equation of noise elimination of the dissipative silencer is translated into the constant differential eguation. and the project simulates and calculates the distributing thing of interior velocity of flow by the finity element

    在理論上，採用了將阻性消聲器的消聲量特徵方程轉化為常微分方程的計算方法計算消聲量；在計算阻性消聲器的阻力損失時，運用了有限元數值模擬的方法模擬計算了簡化消聲器模型內部流場流速的分佈情況，並由此得到其動態阻力損失。
  11. Actually, the goal that exceeds constant education should be very simple, suit their body and mind to expand the education of the characteristic to exceed constant children to offer namely

    實際上，超常教育的目的應該很簡單，就是為超常兒童提供適合他們身心發展特點的教育。
  12. In pulsed field magnetization condition, we find some new phenomena characteristic, that is, the trapped fluxes of ybco bulk increase with increasing intensity of applied field up to about 1. 9t, but decease beyond this value and the scanning distribution map of the trapped fluxes on the surface of the superconductor is not slick, which is different with the superconductors magnetized in constant magnetic field and the normal permanent magnets

    超導體在脈沖場下具有特殊的勵磁特性，當脈沖場在1 . 9t左右時，由於在脈沖場下超導體內的磁通線運動受到較大的粘滯力作用，超導體表面中心的俘獲場分佈掃描圖將出現一些凹陷區域，這是跟超導體在恆定場下的勵磁和一般永磁體所不同的。
  13. Up to the present, the dampers " analytical models at home and abroad are the models with constant differential coefficient parameters. their key parameters depend on experiment testing. therefore, they are n ' t becoming to forecast the absorbers " characteristic

    國內外至今所建立的減振器分析模型，基本上都是集總參數模型，其關鍵的模型參數很大程度上依賴于實驗測定，不適用於減振器特性的預測分析。
  14. The characteristic of stirring equipment is used a shaking sieve to disperse the adding pure fe or fe203 powder and used a combined stirrer instead of a common paddle stirrer to improve the shear effect to mixing melts. the particularity of fabricating process is the step of holding stirring at a constant high temperature. both of which can improve the even distributing degree of reinforcement phase in pure al matrix

    攪拌設備的特殊之處在於使用了振蕩篩分散加入粉末和更換組合式攪拌器來提高對混合熔體的剪切效果，工藝的特別之處在於一定溫度下的保溫攪拌過程，這二者均能提高強化相在純al基體中的均勻分佈。
  15. As a result, the concept of state space for conceptual design of mechanical system is presented, which is new to the literature, based on the set of all state vectors. meanwhile, the properties of state vectors, which are vectors addition, constant multiplying, reversible driving, zero vectors, are discussed in state space. secondly, the dual - vector is introduced to descript the essential relation among the input and output characteristic vectors as well as sms

    按照狀態空間中對偶特徵矢量的運算規則，在已知系統的輸入輸出特徵矢量的情況下，通過數學推導求解，將形成的系統狀態變換矩陣分解為多個狀態變換矩陣的乘積，再通過各狀態變換矩陣到數據庫中尋找相應的基本變換單元集合，然後進行按序組合，進而從理論上獲得相應的方案設計可行解。
  16. By analyzing the charging & discharging characteristics of accumulators, and by improving the hardware and control algorithm of the former chargers, this dissertation designes a high - power charger. the charger can not only charge accumulators with constant voltage and limited current, but also charge them intelligently. meanwhile, it is characteristic of over - voltage, over - current and overheat protection, self - recovery and automatic current - averaged in parallel

    本論文通過對蓄電池的充、放電特性的分析以及對以往充電機硬體和控制演算法兩個方面的改善，設計了一種不僅能對蓄電池進行恆壓限流充電，還可以進行智能充電，同時具有過壓、過流、過熱保護、自恢復功能和並聯自動均流的大功率充電機。
  17. First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented

    建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。
  18. On structure design aspect, a closed magnetic route around the gmm is formed, so magnetic symmetry and intension of gmm are improving ; on analysis of electricmagetic characteristics aspect, ansys software is applied to analyze the gma to optimize its structure ; on ampliflcatory power system aspect, based on the characteristic of driving power of gma and the principle of constant current source, a power amplifier using power mosfet is designed ; on testing equipments aspect, measure bracket is designed including transom, stand beam, screw, pedestal ; on cooling system aspect, a constant temperature cooling system is designed theorily

    本文根據稀土超磁致伸縮材料的特點及其在工業元件、系統中的應用要求，在以往微位移致動器的基礎上，克服他們的不足，經過各方面的完善，設計出一種精確的、適合於主動控制的稀土超磁致伸縮位移致動器，主要在稀土超磁致伸縮致動器結構設計、電磁特性分析、功放系統以及最後的實驗測試系統方面進行了設計，同時對溫度冷卻系統也做了一些理論設計。
  19. The toxicity peaks always lagged the growth peaks, furthermore, the greater the biomass, the longer the lagging days. both mc - rr and mc - lr gave rise to their maximum value at the end of every single bloom and soon after a new bloom began. in general, the ratio of mc - rr and mc - lr remained comparatively constant during every bloom, but no obvious change characteristic was observed on mc - yr content. in the discussion, in was found that toxin - producing of microcystis was related to biomass, nutrients and water temperature

    分析各個階段的水華，我們發現毒性峰總是滯後於生長峰，且生物量越大，滯后的時間越長； mc - rr與- lr的含量在每個階段水華的末期達到最大，之後新一輪的水華開始出現，並且mc - rr與- lr的比例保持基本恆定，但是mc - yr的變化無明顯的規律。
  20. Introduces the structure of the multi - actuators control system based on pressure decrease sensing. then a multi - actuators control system model is developed for the constant pump discharge pressure hydraulic system. also the factors that affect the static accuracy of actuators " speed and flow rate and the dynamic characteristic are analyzed in this chapter

    第二章簡單敘述了基於壓差傳感的計算流量反饋流量控制原理及其實現；介紹了基於壓差傳感的多執行器復合控制系統的構成；之後主要針對定壓系統多執行器復合控制建立了數學模型，並分析了影響執行器速度及流量穩態控制精度和動態特性的一些因素。
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