查询词典 impulse

In the condition of definitive structural parameter and part of operative parameter of impulse engine, the effect of controlling force of impulse engine on correct trajectory is analysed. The number of total layer, impulse of each impulse engine and fire interval are determined when the correct ability and flight stability are satisfiable.

在确定了脉冲发动机的结构参数和部分工作参数的情况下，分析了脉冲发动机控制力对修正弹道的影响能力，确定了在满足修正能力及飞行稳定性的条件下脉冲发动机的总层数、单冲和点火间隔。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10～12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响，从反射信号能量角度出发，给出了入射脉冲上升时间与弛豫时间的关系；接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响，给出了RAM目标辐射和有关UWB信号设计的一般性结论；其次，对介电RAM的弛豫时间效应作了简单的分析，探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响；最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统，在微波暗室中对几种不同的RAM目标进行了测量，结果表明：其反射波形的基本规律与上述理论分析相一致；从各种不同目标回波的能量对比结果得出，涂覆RAM目标对冲激信号的吸收比15％带宽的正弦信号要小10～12dB，证实了RAM的非线性效应对回波的影响，也证实了冲激信号反隐身的潜力。

Transmitting and receiving impulse response of two-dimensional array are obtained by the summing impulse response of a single rectangular element with differentia delay time. The approximation arithmetic of array element impulse response is discussed.

讨论了单阵元声场脉冲响应函数的快速近似算法，通过对不同延时量的矩形单阵元声场脉冲响应函数进行叠加，得到了二维换能器阵列的发射和接收脉冲响应函数，再施加以宽带脉冲激励函数，从而得到二维换能器阵列的声场分布。

Advances an efficient method of 2D FIR filtering based on impulse response rounding. Discusses the impulse response characteristics of 2D FIR filter. Then describes designing process of efficient 2D FIR filter based on impulse response rounding. Discusses application of efficient 2D filter with circular symmetric with eightfold symmetric frequency response. At last discusses the selection of rounding parameters.

提出了一种高效、实用的二维FIR滤波器的设计方法，在讨论了二维FIR滤波器的冲激响应特性的基础上，开发了一种基于冲激响应舍入法的高效二维FIR滤波器的设计方法，并以具有八重对称的圆对称滤波器为例讨论了高效滤波器的实现过程，最后对滤波器设计中的舍入参数的确定进行了讨论。

In his " Letters of Aestheical Education " Siller points out Aesthetics i rooted in the depth of human nature it is the object of game impulse which is the combination of perceptual impulse and rational impulse resulted from interraction of human character and human nature .

席勒在中明确地提出：美根植于人性深处，美是游戏冲动的对象，游戏冲动是结合感性冲动和理性冲动的冲动，它们根源于人性的抽象结果(人格，状态及其相互作用)。

First, based on the analogy of the mathematical expressionbetween the propa gation of EM wave and that of seismic wavein a horizontal stratified earth, the re flectivity and transmissionformulation for EM plane wave propagating incident nor malto the layers are derived, the formulation with relation to pseudo-impulse is discussed and pseudo-impulse response is compared with impulse response of re flection seismology.

作者首先基于电磁波与地震波在水平层状介质中传播特征在数学形式上的相似性，推导了垂直入射平面电磁波在层间反射与透射传播函数，并讨论了它们与伪脉冲的关系，与反射地震学中脉冲响应作了对比。

A prominent visible blood vessel in the pontocerebellar angle was noted in the affective side, but no similar finding was noted in the non-affective side. In conclusion, acupuncture may improve facial spasm, this effect of acupuncture probable mediates via a antidromic impulse of facial nerve to decrease intensity of impulse that is orthodromic transmission from facial motor nucleus or from focal demyelization of neurovascular compression; acupuncture evoked cerebral cortex to produce a descending inhibiting impulse to inhibit the hyperexcitablity of facial motor nucleus to improve facial spasm.

结论是针刺可以改善颜面肌痉挛，针刺可能经由诱发颜面神经逆行的神经冲动减少颜面运动核或神经血管压迫之focal demyelination处往下而来神经冲动的强度；或者针刺诱发大脑皮质产生抑制性下行神经冲动抑制颜面运动核的过度兴奋来改善颜面肌痉挛。

A method of processing a series of input audio signals representing a series of virtual audio sound sources placed at predetermined positions around a listener to produce a reduced set of audio output signals for playback over speaker devices placed around a listener, the method comprising the steps of: for each of the input audio signals and for each of the audio output signals: convolving the input audio signals with an initial head portion of a corresponding impulse response mapping substantially the initial sound and early reflections for an impulse response of a corresponding virtual audio source to a corresponding speaker device so as to form a series of initial responses; for each of the input audio signals and for each of the audio output signals: forming a combined mix from the audio input signals; and forming a combined convolution tail from the tails of the corresponding impulse responses; convolving the combined mix with the combined convolution tail to form a combined tail response;for each of the audio output signals: combining a corresponding series of initial responses and a corresponding combined tail response to form the audio output signal.

提供了一种处理一系列输入音频信号的方法，所述输入音频信号代表放置在收听者周围预定位置的一系列虚拟的音频声源，该方法可以产生一组精简的用于在收听者周围的扬声器装置上进行播放的音频输出信号，该方法包括以下步骤：对每个输入音频信号和每个输出音频信号进行以下步骤：用相应的脉冲响应最初的头部对输入音频信号进行卷积以形成一系列初始响应，其中的脉冲响应充分映射了相应的虚拟声源到相应的扬声器装置的脉冲响应的初始声音和早期反射；对每个输入音频信号和每个输出音频信号进行以下步骤：形成音频输入信号的混音；并根据对应脉冲响应的多个尾部形成复合的卷积尾；用复合的卷积尾对音频信号的混音进行卷积以形成复合尾部响应；对每个音频输入信号进行以下步骤：把相应系列的初始响应与相应的复合尾部响应进行复合以形成音频输出信号。

The solution of the optimal 3-impulse rendezvous is a multi-variable iteration process. For the 3-impulse rendezvous with terminal coastings, the symmetry characteristic of optimal 4-impulse rendezvous was applied to reduce the number of the iteration variables to save the calculation consumption.

三脉冲最优解的求解采用多变量迭代的方法；对于存在端点滑行段的三脉冲最优解的求解，利用四脉冲最优解的对称性，减少迭代变量的数量，降低了计算量。

This year is the 81 anniversary of the People's Liberation Army Day 82, all of a sudden recall of military songs learned,一首首vivid, so there has been a re-review the Song of the impulse is the impulse of my creed is equivalent to action.

今年的八一是中国人民解放军建军82周年的纪念日，突然间想起以前学过的军歌，一首首历历在目，于是又有了再重温军歌的冲动，我的信条就是冲动就等于行动。

Sodium citrate; calcium carbonate; calcium hydroxide; potassium bicorbonate; magnesium carbonate; ferrous sulphate; Zinc sulphate; copper sulphate; manganese sulphate; potassium iodide; sodium selenite.

柠檬酸钠；碳酸钙；氢氧化钙；碳酸氢钾；碳酸镁；硫酸亚铁；硫酸锌；硫酸铜；硫酸锰；碘化钾；亚硒酸钠。

All this to say that I'm glad filmmaking hasn't become completely ironic. I can enjoy an ironic film as much as the next person, but they usually involve a message of some sort. One that's delivered in a smirkingly clever way that requires little in the way of talent.

所有这些都是说，我很高兴电影制作没有变成完全讽刺艺术，我可以和下一个人一样享受讽刺电影的乐趣，虽然他们经常会被划归到一定级别，技术方面不需要很高的才能。