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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 mankind that conduct and actions dominate, and also really do not know, deceitful cats in fact early insolently ambitiously the diagram of 妄 jumps a claim the Earth, they pass from generation to generation development every kind of technology and weapon, act from inside to wait for an opportunity to stage the " coup" nearby at mankind, if it were not for utterly loyal dogs each time always by all meansly the crary plan of setback cats, afraid of mankind early was taken by the cat but on behalf it.

而作为主宰的人类，也并不知道，狡猾的猫们其实早就野心勃勃地妄图霸占地球，它们世代相传研发各种科技与武器，卧底在人类身边伺机发动"政变"，要不是忠心耿耿的狗们每次总是千方百计地挫败猫们的疯狂计划，恐怕人类早就被猫取而代之了。

At the same time, mechanical tunnel boring equipment will grind up the rock and soil detached by the melted kerf and pass it to the rear of the machine for disposal by conveyor, slurry pipeline, etc.

同时，机械的隧道钻孔设备会磨碎的岩石和土壤，被熔化的切口分离并传到机器的后面，由传送机、输浆管道等进行清理。

It was a strategic site, guarded on three sides by mountains and controlling the routes by which invading armies could penetrate Laconia and the southern Peloponnesus via the Langhda Pass over Mt Taygetus.

这是一个战略地点，守卫，三面是山，并控制路线，其中入侵，两军可以穿透拉科尼亚和南部peloponnesus通过langhda通过以上的山泰噶托士。

Installed on a by-pass line, mainline pressure is accurately controlled by relief of excess pressure.

安装一条旁路管线，通过释放过大的压力实现主管线压力的精确控制。

I rose as at thy call, but found thee not; To find thee I directed then my walk; And on, methought, alone I pass'd through ways [ 50 ] That brought me on a sudden to the Tree Of interdicted Knowledge: fair it seem'd, Much fairer to my Fancie then by day: And as I wondring lookt, beside it stood One shap'd and wing'd like one of those from Heav'n [ 55 ] By us oft seen; his dewie locks distill'd Ambrosia; on that Tree he also gaz'd; And O fair Plant, said he, with fruit surcharg'd, Deigns none to ease thy load and taste thy sweet, Nor God, nor Man; is Knowledge so despis'd?

它看来很美，比我白天所想的美丽百倍；我惊奇地发现，树旁站着一个带翅膀的，样子很像我们常常看见的天使，他那湿漉漉的鬈发，蒸发着天香。他也在那儿观看那棵树；还说： '啊，真是美丽的树，果实累累，竟没有神或人来品味你的甘美，从而减轻你的重荷？难道知识那么贱？

I walk by his side, pluck flowers by the way, arrange them carefully into a nosegay, then fling them into the first stream I pass, and watch them as they float gently away.

我和阿尔伯特并肩走着，不时地弯下腰去采摘路旁的鲜花，用它们精心扎成一个花环，然后--我把花环抛进了从面前流过的溪水里，目送着它缓缓向下游飘去

It is revealed by the saturated single liquid seepage experiment performed by FDES-641 triaxial system that the movement of low speed seepage in low permeability media departs from the law of Darcy, meanwhile the curve of seepage flow would not pass through the origin of coordinates.

本论文作为国家自然科学基金资助项目"低渗透弱胶结岩石非线性渗流机理研究"的一个组成部分，通过对低渗透岩石系列渗流实验结果进行深入研讨并结合数值分析的方法，对该课题开展了研究。

Complex flocculant PASS has the abilities of neutralizing electric charge and flocculating. The experimental results show: it is feasible that the emulsion wastewater can be treated into qualified discharging water. The dosage of flocculants and pH value have been optimized by coagulation experiments. In addition the mechanism for emulsion wastewater has been studied by using Perron timed complex colorimetric method and neutralization method. Aiming at characteristics of high concentration and high CODCr emulsion wastewater the technology that emphasized on coagulation-precipitation twice has been proposed in this paper.

本文采用复合型絮凝剂处理乳化液废水，研究结果表明，乳化液废水的处理过程包括凝聚脱稳及吸附絮凝，其中絮凝是决定混凝效果的关键性步骤，复合型絮凝剂聚硅酸硫酸铝是一种既具有较强的电中和能力，又具有优异的絮凝性能的无机混凝剂，通过对乳化液废水药剂筛选实验，实验结果表明聚硅酸硫酸铝对乳化液废水是比较合适的混凝剂，并确定了药剂的最佳投药量、最佳pH值条件等操作参数，针对乳化液废水的特点，综合国内外研究成果和经验，提出了二次混凝沉淀处理方案，该方案具有处理设备结构简单、运行管理简便等优点。

You do not allow opportunities to pass you by, but do not exaggerate by provoking people who love you.

你不允许自己与机遇擦身而过，但请不要自我膨胀到伤害爱你的人。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。