查询词典 acceleration-time graph

The time-domain response of the induced currents on a scattering object irradiated by a plane wave with a Gaussian pulse in time is expanded as an associate Hermite series in this paper. Using the isomorphism of the associate Hermite function and its Fourier transform, the frequency-domain information can be obtained similarly to the time-domain expansion. According to the corresponding relation between time-domain analysis and frequency-domain analysis, and using the early-time response and the low-frequency information of the induced currents, the non-known coefficients in the expansion series can be decided. The entire responses of the induced currents on the scattering object in both time and frequency domains can be obtained at one time by simultaneous extrapolation computation using both the early-time response and the low-frequency information of the induced currents.

摘要首先根据散射体在高斯脉冲平面波激励下感应电流的能量几乎全部集中在时间轴和频率轴上的有限范围内，该文将时域响应展开为系数待定的连带Hermite级数的叠加，并根据连带Hermite函数的傅里叶变换的自反性，得到与时域响应形式类似的频域响应；然后利用时域方法和频域方法分别计算散射体上感应电流的早时响应和低频信息；最后经过时域和频域联合外推计算，由早时响应和低频信息确定时域和频域响应的待定系数，从而获得了整个时域和频域的完全响应。

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

And indeed there will be time For the yellow smoke that slides along the street,Rubbing its back upon the window-panes;There will be time,there will be time To prepare aface to meet the faces that you meet;There will be time to murder and create,And time for all the works and days of hands That lift and drop aquestion on your plate;Time for you and time for me,And time yet for ahundred indecisions,And for ahundred visions and revisions,Before the taking of atoast and tea.

呵，确实地，总会有时间看黄色的烟沿着街滑行，在窗玻璃上擦着它的背；总会有时间，总会有时间装一副面容去会见你去见的脸；总会有时间去暗杀和创新，总会有时间让举起问题又丢进你盘里的双手完成劳作与度过时日；有的是时间。无论你。无论我，还有的是时间犹豫一百遍，或看到一百种幻景再完全改过，在吃一片烤面包和饮茶以前。

Above stage approximate timetable is (established provisionally humanity is born in 5,000,000 ago east Africa a mysterious place), moves primitively the time: In front of 5,000,000 - 2,000,000 ago, settles down primitively the time: 2,000,000 ago - 500,000 years ago, compete barbarically the time: 500,000 years - in 1500, rank smell of blood exploration time 1500 - in 1840, knowledge explosion time: 1840 - 1945, technical restriction time: 1945 - 2200, belief confused time: A.D. 2200-2400 year, human unified time: After 2400, this is human history several most important times; In this long process, has had between the innumerable inferior humanity's size conflict, until now the humanity only then used the innumerable own similar blood to find the road which the final humanity went home!

以上阶段大致时间表是（暂定人类诞生于500万年前非洲东部一个神奇的地点），原始迁徙时代：500万前－200万年前，原始定居时代：200万年前－50万年前，野蛮竞争时代：50万年－公元1500年，血腥探索时代公元1500年－公元1840年，知识爆炸时代：公元1840年－1945年，科技制约时代：1945年－2200年，信仰迷茫时代：公元2200－2400年，人类统一时代：2400年以后，这就是人类历史几个最重要的时代；在这漫长的过程中，发生过无数次人类之间的大小冲突，直到现在人类才用无数自己同类的鲜血找到了最后人类回家的路！

This paper briefly introduced the progress in time-lapse seismic as shown from the 76th SEG annual meeting. Topics include the repeatability of time-lapse seismic, in which we discussed the effects of shooting and receiving environments on repeatability, the effects of the cable length and its positioning accuracy and stability on repeatability, and the data processing techniques to improve repeatability, new insights into time-lapse seismic, in which we described tube wave time-lapse response, spectral decomposition, and time-lapse VSP monitoring, and problems related to application of time-lapse seismic technology. The comprehensive applications of time-lapse seismic and other geophysical data were demonstrated with the real data from an oilfield. Finally, we summarized the difficulties in using time-lapse seismic and outlooked its future trend.

简要介绍了第76届SEG年会反映的时移地震技术的进展，主要内容有：时移地震的可重复性，讨论了激发、接收环境对可重复性的影响，海上拖缆长度、定位精度及排列稳定性对可重复性的影响，以及通过数据处理技术提高数据的重复性；时移地震技术的新领域，讨论了管波时移地震监测、谱分解技术和时移VSP监测等；简要分析了时移地震技术应用中应该注意的问题，并通过时移地震在某个油田的实际应用，讨论了时移地震技术与其他地球物理手段的综合应用；最后分析了时移地震技术目前存在的问题，展望了其发展趋势。

The second is time, the use of time, we can promote the acceleration of history running.

第二是时间，利用时间，我们可以促进历史的加速运转。

In order to increase the computation efficiency, artificial dissipation, variable time step and enthalpy damping acceleration techniques are used in the five-step Runge-Kutta time stepping.

在定常的计算中，采用5步Runge-Kutta时间推进，引进人工耗散，应用了当地时间步长、焓阻尼等加速收敛技术。

First , the car equipped with the product can automatically open blinker flash as warning signal by acceleration at collision time without any hand-operation , and at the same time automatically send out anti-collision signals through wireless when the driver can't spare to open the emergence lamp to give warning to the coming car.

第一， 车辆行驶遇突然事故紧急制动或碰撞，驾驶员来不及或无法打开警示灯向驶近的车辆示警时，该产品无需任何人工操作，靠加速度撞击力即可瞬间自动接通警示灯闪烁示警，同时自动通过无线电对周围发射防撞信号。

Fig. 5 Hung with a chain around one's neck, the bitmap image shows a real time animation of Bitman trying to keep his balance in the swinging world. By shaking the "jewelry" one can make Bitman dance.ix The movement of the digital bitmap character is created in real time as the embedded sensors detect acceleration and tilting of the panel. The product is commercially available along with other goods developed by the artists. The distributor of the piece is Yoshimoto Kogyo Inc., the king of Japan's entertainment business, which hires most of the standup comedians appearing on Japanese TV. Nobumichi Tosa himself (who leads Maywa Denki as its "CEO") is officially an employee of Yoshimoto, although he recently separated some of his activities from the company.

一个象素化的男人的影像，由7x7的塑胶骨架跟8x8的母体由LED灯所构成(如图5)，戴起一条鍊子在脖子上，那个Bitman人像表现出即时动作，像是试图保持自己在摇晃中的世界的平衡，只要你摇动他你可以让他跳起舞来，他的动作是被即时超连结加速侦测的感测器和倾斜面板创造出来，这项产品是可以与艺术家的其他作品一起被出售的，发行者是Yoshimoto Kogyo Inc在日本做娱乐事业，他们雇用高等的电视喜剧演员，土佐信道在这个公司里是CEO，不过他最近很少参与公司的活动。

So in fact, if they senesce just a tiny tiny bit over time -- that is, if their half-life gets shorter, very very slowly -- we wouldn't actually be able to tell that this was happening in the time that we took our measurements, because the acceleration in the rate of atoms decaying (relative, of course, to the number that had not decayed already, which is always decreasing) would be too tiny to be statistically detectable.

所以在事实上，如果它们随时间衰老得只那么一点点，—就是说，如果它们的半衰期缩短得非常慢—那么我们实际上不可能知道，在我们测量期间发生过衰减，因为原子衰减的速率加速得太小，统计学上检测不出（当然，是相对于不曾衰减的数目而言，不曾衰减的原子数目总是在减少）。

Don't listen to their haver, nothing of that sort.

别听他们胡说八道，根本就没那回事。

But bank's shares trade below their book value, suggesting that investors are skeptical.

但是，银行股票以低于账面价值的价格交易，这一点反应了投资者的怀疑。