力學振蕩 的英文怎麼說

中文拼音 [lìxuézhèndàng]
力學振蕩 英文
mechanical oscillation
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  1. Afterburner systems, designed to operate up to a stoichiometric overall mixture strength, are always fairly close to combustion instability or screech.

    要使加力燃燒系統在理論化學組成量的總混合濃度下還在一直工作，這樣的設計通常都很接近於不穩定燃燒或振蕩燃燒。
  2. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  3. It has been shown that : the little indentation which represents the quantum noise of the system appears in the evolution curves ; the quantum noise which is caused by virtual photon field gradually becomes weak when w increases, the quantum noise increases when n increases ; the virtual photon process make the antibunching effect strengthen, make the squeezing degree deepen obviously, and lead to the additional vibration of entropy, the oscillation extent of the additional vibration of entropy increases when n increases and decreases when co or g increase. besides, the quantum dynamics of two coupling atoms interacting with a single mode ligh t field in a kerr medium is studied in this paper ; the influences of the kerr effect on the mean photon number, the degree of second order coherence of field, the evolution of the field entropy and the squeezing effect are also discussed

    ）的增大，量子噪聲分別減小和增大；虛光子過程使光場的反聚束效應增強，使光場的壓縮程度明顯加深，並引起了附加的「熵振蕩」 ，這種附加「熵振蕩」的幅度將隨著光場初始平均光子數（ ? ）的增加而增大，隨著光場頻率和原子間耦合系數g的增大而減小。本文還研究了充滿kerr介質腔中「耦合雙原子-單模光場」相互作用系統的量子動力學性質，研究了克爾效應對場的平均光子數、二階相干度、場熵演化特性及光場壓縮效應的影響。
  4. The numerical simulation of axisymmetric two - dimensional shock tube is studied, which has a conical convergent section, and its driving gas is the hot product of hydrogen oxygen detonation. finite volume tvd scheme is adopted and the mesh is local orthogonal. the primitive equations are euler s equations of multi - component flow. the new method of eliminating numerical oscillation at the interface of two materials is extended to two dimensions. the mechanical character of this shock tube is analyzed

    對由前向爆轟產生驅動氣體並具有局部錐形收縮截面的軸對稱激波管利用兩相常比熱完全氣體的歐拉方程組和有限體積tvd格式在局部正交的網格上進行了二維數值模擬。將消除兩種介質界面處數值振蕩的新方法成功地推廣到二維情況。分析了該激波管的力學特性。
  5. Through the deep study of f. d. demello dynamic model of electromechanical transition and synchronous generator theory, we proposed a new control strategy of excitation device that can eliminate the negative - damping phenomenon, which is directly against the cause of producing negative - damping represented as low frequency oscillation in the system

    通過深入研究f . d . demello機電暫態的動力學模型以及同步發電機理論，針對系統產生負阻尼即低頻振蕩的原因，我們提出了一種新的可消除負阻尼現象的勵磁控制策略。
  6. Recent years, the using of piezoelectric sensors becomes a focus in novel biosensors research. the basic principle is that the characters of its oscillation are highly responded with the changes of the surface mass adsorption, or the physic characters in the reaction system including density, viscosity, conductivity and so on. a piezoelectric biosensor with a nanogram sensitivity could be constructed through a reasonable biological processing and structure designing to the piezoelectric quartz crystal

    近年來，壓電傳感器檢測技術逐漸成為生物分析中的研究熱點，其基本原理是利用石英晶體振蕩特性對石英晶體表面質量負載（質量效應）和反應體系物理性狀如密度、粘度、電導率（非質量效應）等的改變具有高度敏感的特性，通過對石英晶體進行適當的生物學處理和結構設計，構建出具有具有ng級檢測能力的生物傳感器。
  7. Theoretical model of self - mixing interference in a linear frequency modulated laserdiode is presented by using the dynamic theory of semiconductor laser with weak external optical feedback. the characteristics of oscillation frequency shift and output power changes of the laser diode are analyzed by using the theoretical model. the absolute distance from front facet of laser diode to target can be found by measuring spectrum of output power of the laser diode

    使用半導體激光器在弱反饋條件下的動力學理論，建立了線性調頻半導體激光器的自混頻干涉理論模型.基於該模型，分析了激光器振蕩頻率偏移與輸出功率變化特性.通過測量激光器輸出功率譜，可以得到激光器前端面與被測目標之間的距離
  8. We get into several theoretical discussions in the part two, and point out that the huge population is the very encumbrance of the modernization course in the country. historical experience of china farming since 1950s is covered in the third section, which prove the theoretical hypothesis reached in the former chapter, the suggestion here is that decision maker have to pay the most attention to the excess baggage. part four focus on the strategic decisions of wuhan, the archtypes of agricultural modernization are created in this part, also a conclusion is draw that, instead of putting the three strategies together, agricultural integration is the most suitable choice for the rural area of wuhan

    在文章的第三部分，首先運用一般的歷史分析方法，對我國農業現代化的歷史進行了總結和歸納；在此基礎上，運用系統動力學的方法，建立了不同歷史時期農業發展問題的系統基模，並以此對農業現代化的動態復雜特性進行了深入的研究和探索；也進一步證實了我國農業現代化進程的最為本質的制約因素是農業勞動力轉移問題，同時還指出，歷史上的種種「失誤」 、 「不足」 ，正是由於缺乏或忽略了對農業現代化的這種動態復雜特性的深刻認識，並導致了我國農業現代化進程的過度振蕩與滯緩。
  9. The explanation for this “ spooky action at a distance ” ( to borrow a term from quantum mechanics ) is that a grid of wires underneath the screen emits an electromagnetic field that causes a coil inside the pen to oscillate at a resonant frequency

    這種幽靈似的超距作用（從量子力學借來的術語） ，是因為螢幕下方的柵極線路會發出電磁場，讓專用筆內部的線圈以某個共振頻率振蕩。
  10. Wind effects on buildings and structures ; wind tunnel modelling ; structural dynamics ; vibration control ; environmental fluid mechanics

    風對建築物及結構的作用：風洞模擬；結構動力學;振蕩控制;環境流體力學。
  11. Afer presenting the classify and development of excitation, the way of designing power system stabilizer is proposed. in recent years, flexible ac transmission system attracts more and more people in academe and it presents a new effective method to damp the low frequency oscillation

    在介紹了勵磁方式的分類及發展之後，提出了附加勵磁控制設計的原則和方法；基於電力電子技術發展起來的靈活交流輸電技術近年來引起了學術界的廣泛關注，為抑制低頻振蕩提供了新的有效手段。
  12. A dynamic model of potentiostatic relaxation current oscillation of gold electrodissolution in acid chloride solution

    金電極外控電壓陽極溶解過程中非連續型電化學振蕩的動力學分析
  13. On the base of the fujian power system that has the special configuration of " large power generator with small power system " in 2000, constructs power system models of fujian and fujian interconnected with other parts, does a lot of calculation and analysis and simulation, researches the security mechanism and rule of the fujian special power system interconnected with large power system. the above connection can keep security and stability and can make obvious benefits, but when the transmission power reach to excessive quantity the main power grid will increases interconnected flow - in or flow - out exchange power load. the power operation state tended to instability ; the infirmable interconnection make s the damp infirmable

    本文以2000年前後具有「大機組小電網」特殊結構的福建電力系統為背景，建立了福建電力系統及其與外部互聯的數學模型，開展大量的模擬計算分析，研究了「大帆組小電網」電力系統與大容量電力系統互聯偏弱的安全穩定性的機理和規律：前述互聯可以安全穩定運行，取得顯著效益，當傳輸功率達到一定量后，主網架增加了送出或吸收互聯交換功率的負載，系統運行狀態向穩定性水平有所下降的方向轉移；聯絡偏弱使阻尼偏弱，聯絡線小幅低頻振蕩和大幅低頻振蕩易被激發，聯絡線一旦重載斷開，系統高周或低調嚴重。
  14. Plastics - determination of dynamic mechanical properties - part 10 : complex shear viscosity using a parallel - plate oscillatory rheometer

    塑料.動態力學性能的測定.第10部分:用平行板振蕩電流計測定復切變粘度
  15. Interface capturing method for multi - fluid flow, which smear out the tangential discontinuity, is developed to simulate the compressible flow. the multi - fluid problems can be transformed to a single - fluid to resolve, using the fluid dynamic conservative equations coupled with the interfaces capturing equations, and any of stability and non - oscillation scheme for the whole computational region. the two schemes mentioned above are better

    給出的方法具有以下特點：引入界面捕捉方程將切向間斷抹平，形式上將多流體計算轉化為單一流體計算，數值計算通過解流體動力學和界面捕捉耦合方程組來實現，可以應用的差分格式是任何一種穩定和不產生非物理振蕩現象的差分格式，前面提到的兩種格式只是其中效果比較好的格式。
  16. In this thesis work, a 1 - d hydraulic transient model and a 2 - d compressible flow model with the large eddy simulation approach have been applied to analyse the hydrodynamic process of the unsteady separated flow. prototype observation data of gezhouba shiplock no. 3 has been used to verify the computational results. it has been found that two different types of flow regime - stably - varying and strongly - oscillating regimes - could occur in the radial gate tunnel

    本文採取將一維非恆定流模型與二維可壓縮流一大渦模擬模型相結合的方法，分析了急變分離流的水動力學特性，並利用葛洲壩三號船閘的原型觀測資料驗證了數值模型的可靠性，發現閥門段存在平穩變化型和劇烈振蕩型兩種不同的流態，並詳細計算、分析了它們的流動特徵
  17. According to an airborne radar under the bad mechanical environment and the special installment, the vibrating isolation theory is used here to design elastic properties of vibration isolation system of crystal oscillator

    並根據某機載雷達所處的惡劣的力學環境和苛刻的安裝條件，利用隔振理論，對晶體振蕩器隔振系統的彈性特性進行設計。
  18. Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms - terms particular to telecommunications and electronics - oscillations, signals and related devices

    電工電力電信電子學照明和顏色術語詞匯.第3部分:電信和電子學專用術語.第14集:振蕩信號和有關器件
  19. Electrochemical oscillations ; systematic dynamics

    電化學振蕩系統動力學
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