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According to the principles of the matrix converter while working in unbalance input and balance input condition, the simulation model for dynamic modulation strategy of offset angle of input current for matrix converter was founded with Matlab in unbalance input.

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In this paper, from the view of engineering application, under the condition that three control points formed an isosceles triangle and only the error of image coordinates was considered, the influence of yaw angle to the robustness of P3P pose estimation method was developed.

本文從工程應用的角度出發(fā)，在三個控制點構成等腰三角形且僅考慮圖像坐標檢測誤差的條件下黄色视频在线观看视频在线播放，研究偏航角對P3P位姿測量方法魯棒性的影響中文精品99久久国产。

In this paper, typical heating distributions on the gap wall were presented; effects of Mach number, attack angle and deflection on heat transfer to the gap wall were discussed;and comparisons between measured and predicted gap heating were made.

本文給出了縫內典型熱流分布結果，討論了馬赫數(shù)人人摸人人操人人喊、攻角和偏轉角對縫內熱流分布的影響并與現(xiàn)有計算方法和實驗數(shù)據(jù)進行了比較。

Crystal lattice constants are close to other experiment results. Three kinds of chemical bonds exist among Mg and B atoms, between magnesium and boride is ionic bond and metallic bond is the predominant interaction in the layer formed by magnesium atoms. A strong covalent bond in the form of sp2 hybrid between boride atoms is the most important factors which can affect the transition temperature of MgB2. Population analysis clearly shows that electrons are transferred from Mg to B, as a result, the electron-phonon coupling in the layer of B is very strong.

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We expect it will benefit the industry field to break through the optical measuring limits at present by offering some new ideas. Optical measuring research based on moire interferometry has developed for several decades. The main idea of this research is to utilize the moire effect caused by two superimposed gratings of identical or similar spatial frequency. One is the reference grating and it is a virtual grating created by a computer program in this research; The other grating is the image of grating projected on the measured surface by the DLP projector, and this grating will distort because of the different sloped profile of the surface. To superimpose the program-created grating and the captured distorted grating will derive the so-called moire effect. This research combined the basic theory of optical interferometry and moire effect to project the different phases of the projected grating fringes by the phase-shifting method and compute the principal value of arguments between -π,π. In the end, the phase unwrapping program based on discrete Fourier transform of solving PDEs is used to unwrap the phase of the measured surface, and finally the surface profile is derived by the optical measuring system.

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A detailed investigation was conducted in this paper on the flow asymmetry and its influencing factors over an ogive slender body model, incorporated with surface pressure measurement, skin oil flow pattern visualization, hot wire dynamic signal acquasition and other relevant approaches, in a low turbulence wind tunnel.

現(xiàn)代先進戰(zhàn)斗機和戰(zhàn)木導彈常具有細長前體，大攻角條件下前體背風面會形成非對稱渦結構夜间福利av，從而產(chǎn)生很大的側向力和偏航力矩猫咪官方app网页版ios，這會嚴重影響飛行器的可操縱性和飛行安全。

To achieve the best long-terns results, this study suggested the preferred initial postoperative alignment was slight overcorrection (5-10△).

為了得到最佳之最后矯正效果久久福利亚洲，本篇也建議較好的術后偏位角是輕微的過度矯正在5-10△之間欧美日韩在线观看。

The specificity of the surface gained in this way is that when the beam of rays parallel to its axis of rotation falls on it, the beam is reflected so that all the rays meet in one point, known as the focus, in the same way that optical lenses focus light rays in their focus.

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By computer simulation, we analyze the influence of the incidence plane, incidence angle and thickness of air gap on transmittance, and the dependence of the transmittance on wavelength is given in the spectral range which is required by the instrument system using Sellmeier dispersion equation. The transmittance of Grand-Taylor prism is tested in experiment, and the results are in good agreement with the theoretical results, so the correctness of the theory is verified.

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