簡振蕩 的英文怎麼說
中文拼音 [jiǎnzhèndàng]
簡振蕩
英文
simple oscillator-
A simple limiter similar to the one of earth and jespersen is presented to eliminate unphysical oscillations near discontinuities
發展了一種簡單高效的通量限制器抑制激波處的非物理振蕩。It illustrates the behaviour of some simple types of oscillator.
它描述一個簡單的振蕩器特性。In order to verify the accuracy, credence and effectiveness of the unstructured overset grid algorithm, steady and unsteady flow field of naca0012 airfoil are simulated. the unsteady flow field is caused by the oscillation of the airfoil. the two computational results are both compatible well with the experimental data
為了驗證非結構重疊網格方法的正確性、可靠性和有效性，本文對基於非結構重疊網格的naca0012翼型的定常流場以及簡諧振蕩的非定常流場進行了數值模擬，均取得了與實驗數據符合良好的結果。Firstly, i provide a brief review of the previous achievements and investigations on the low - dimensional quantum devices and semiconductor superlattice, in which some principal theories such as bloch oscillations, wannier - stark ladder, zener tunneling and related progress in experiments are introduced
首先綜述了過去三十年低維量子器件與半導體超晶格的發展與相關研究，介紹了bloch振蕩、 wannier - stark臺階、 zener隧穿等關鍵理論以及相關實驗方面的進展，並引入簡化模型：緊束縛模型與單帶模型。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。The system exhibits fast response for the load current disturbance and the system always operates at discontinuous conduction current mode so that no slope compensation is required and high efficiency will be achieved when driving 4 leds. the design and analysis of sub - block circuits are provide in the thesis where band gap reference, oscillator, current sensing and over current protection, led load current
本文完成了各個單元電路的分析與設計，著重分析了帶隙基準源、振蕩器、采樣和過流保護、負載led電流控制和開負載保護五個子電路，對其餘子電路也作了簡要分析。The subsection integral is used to get a simple function at first in the numerical calculation, and boundary integral is realized by gauss integral on each panel and line, then the complexity and isstability as a result of the high frequency surge function can be avoided
數值計算中，首先採用分部積分對被積函數進行簡化處理，然後採用高斯積分實現面元和線元上的積分，避免了被積函數為高頻振蕩函數所帶來的數值計算的復雜性和不確定性。You must appreciate this simple fact to understand high frequency oscillators
你必須要明白這個簡單是事實才能理解高頻振蕩器。Although the structure is simple, the unsteady fluid flow and the action of the wave in the tube are very complicated. so far, there exists a lot of problems need to investigate
熱分離機的結構雖然簡單，但其振蕩管內部流動及有關過程的相互作用卻十分復雜，還存在許多有待解決的問題。The experiments for the online elimination of oil whip are very successful and show that the electromagnetic actuator has better effectiveness and may be used in engineering practice
在實驗中作者成功地在線消除了系統的油膜振蕩故障，該方法簡單而且可靠。In this dissertation we mainly study normal family of meromorphic functions, uniqueness of meromorphic functions, complex oscillation of differential equations in the complex domain and the value distrbution of quasimeromorphic mapping. the main works are following : 1
本文主要研究亞純函數正規族，亞純函數唯一性、復域內微分方程解的復振蕩及擬亞純映射的值分佈問題。本文主要工作簡述如下：一On inter - decadal time scales, tropical cyclone activity over the western north pacific seems to have a periodicity of about 18 years. this may be related to the pacific decadal oscillation see
十年間變化方面，在西北太平洋上，熱帶氣旋活動較明顯的周期是18年左右，這可能是與太平洋十年間振蕩pacific decadal oscillation ，簡稱pdo ，見On inter - decadal time scales, tropical cyclone activity over the western north pacific seems to have a periodicity of about 18 years. this may be related to the pacific decadal oscillation ( see
十年間變化方面，在西北太平片洋上，熱帶氣旋活動較明顯的周期是18年左右，這可能是與太平洋十年間振蕩（ pacificdecadaloscillation ，簡稱pdo ，見Radial transit time oscillator ( rtto ) is a promising novel high power microwave source based on the radial transit - time effect. it can operate under the condition of low impedance and without external guiding magnetic fields
徑向渡越時間振蕩器（ radialtransittimeoscillator ，簡稱rtto ）是一種前景光明的基於徑向渡越時間效應的新型高功率微波源，能在低阻抗、無外加磁場條件下工作。In this paper, the multi - scale technology is introduced to study the wave - motion equations with viscous or transverse inertia effects or both of them. burgers equation, k - dv equation and kdv - burgers equation are deduced respectively, and correspondingly the steady shock - wave solutions, solitary wave solutions and oscillation solitary wave or shock - wave solutions are obtained
接著，又採用奇異攝動理論中的多尺度變換法分析並簡化了分別計入粘性、橫向慣性效應以及同時計入這兩種因素時的幾何非線性波的波動方程，分別得到了經典的burgers方程、 k - dv方程和kdv - burgers方程；並求出它們相應的穩態解分別為激波解、孤波解和振蕩孤波解或激波解。Introduction : in this work “ bridge ” and “ river ” are the same. the central line is a silent stable point enjoying the sideways rocking movement
作品簡介:在這件作品中， 「橋」和「河」是一體的。一個無聲而穩定地振蕩前行的點，劃出了這件作品的中線。Moreover, we obtain the energy band structure, and the band width of the low - lying energy spectrum of the becs due to the quantum tunneling between degenerate ground states. thus we are able to investigate the coherent properties of the bose - josephson oscillations
此外，我們獲得了由於量子隧穿導致的簡並基態能級劈裂，計算了低能能譜的帶寬，在此基礎上討論了玻色?約瑟夫森振蕩的相干特性。We chose suitable tcp throughput model to estimate the available bandwidth correctly, using the estimated round trip time and packet loss ratio for the next time interval as parameters of the model to achive the accuracy of estimated network bandwidth. as the observed losses and round trip time vary very dynamically, adjust the sending rate equivalent to the amount of tcp throughput may result in a rather fluctuant sending rate. so we present a rate adjustment like tcp congestion control based on aimd, which increases its sending rate by an additive inereease rate
根據mpeg4視頻流應用的特點，選擇合適的吞吐量模型，進行合理的參數估計，並根據計算出的帶寬進行相應的速率調整來實現擁塞控制，我們使用未來rtt的估計值和分組丟失率的估計值作為吞吐量模型的參數，增強了控制的實時性，弱化了業務的振蕩性，提高了帶寬預測的準確性；在進行速率調整時，不是簡單地將發送速率調整到與tcp吞吐量模型一致，而是採用類似tcp的aimd策略來調節發送速率，減小了發送速率的振蕩性。You can make a very simple oscillator with one diac, cap and a resistor
你可以用一個交流數據輸入儀，電容和一個電阻做個非常簡單的振蕩器。The principle of double cladding fiber laser is analyzed, simply illustrated the principle and drawbacks of noncoherent beam combination, the coherent beam combination method of multiple optical power amplifier and its advantages are discussed in detail
分析了雙包層光纖激光器的工作原理，簡單介紹了非相干組束的原理和缺陷，重點闡述了並聯主振蕩相干組束方法及相干組束的優勢。分享友人