查询词典 catching-up process

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。

Posada came late to catching, having begun his professional career as a middle infielder, and reached the majors for good at the advanced age of 25, or just two years away from the age at which most hitters peak and begin to go down the other side of the mountain.

Posada 的捕手生涯较晚成形，在他的职业生涯中曾经当过二垒手，因为在小联盟成绩优异而在25岁时升上大联盟，而且只用了两年以27岁高龄达到许多打击者的顶峰但却又悄悄的从另一边滑落了下来。

He was instrumental in catching the criminal.

在捉拿那个罪犯的过程中，他起了作用。

In order to evaluate the restoration effect of cropping systems on continuous cropping soil, treatments of nitrogen-catching crop, rotation, and intercrop were adapted to study soil fertility and microbial indexes of the soil from an 8-year continuous cropping field using pot experiments. Fallow was used as a control. Cucumber yield were recorded.

为了评价栽培制度对连作障碍土壤的修复效果，采用盆栽方式，设置休闲、轮作、间作等处理，以生产中常用的栽培制度即夏季休闲的连作制度为对照，研究各处理对连作8年黄瓜的温室土壤生物修复效果及对后茬黄瓜产量的影响。

Pryrates leaned forward interestedly, chin perched on long-fingered hands like a child watching ram through a window, sunken eyes catching the torches* gleam.

Pryrates感兴趣地往前倾着身子，下巴放在手指长长的双手上，象一个正在望着穿外，眼窝深陷的眼睛注意着火把的微光。

The IDee accessories are all designed uniquely, both elegant and fashion. Especially the series of mounting is matched by luxurious swarovski quartz, pearl, agate and so on, sparkles the eye-catching ray. The intoxicant appearance will let you unfold the graceful makings all the time.

IDee 饰品设计新颖独特，造型典雅又不失时尚，镶嵌系列更是配以奢华的施华洛世奇水晶、珍珠、玛瑙等，闪耀夺目光芒，醉人神采由心而发，让您时刻展现优雅气质，又怎能不动人心弦

Women's beauty sourses from heart, just like the IDee jewelry reveals unique beauty carelessly, palpitates the will of the people easily. The IDee accessories are all designed uniquely, both elegant and fashion. Especially the series of mounting is matched by luxurious swarovski quartz, pearl, agate and so on, sparkles the eye-catching ray. The intoxicant appearance will let you unfold the graceful makings all the time. How can't you be moved?

女人的美是发自内心的，正如 IDee 首饰，不经意间流露出独特的美，轻易悸动人心； IDee 饰品设计新颖独特，造型典雅又不失时尚，镶嵌系列更是配以奢华的施华洛世奇水晶、珍珠、玛瑙等，闪耀夺目光芒，醉人神采由心而发，让您时刻展现优雅气质，又怎能不动人心弦……魅力的IDee首饰令人心花怒放，与它相伴心情自然也舞动起来，IDee首饰值得拥有。

Women's beauty sourses from heart, just like the IDee jewelry reveals unique beauty carelessly, palpitates the will of the people easily. The IDee Shoes are all designed uniquely, both elegant and fashion. Especially the series of mounting is matched by luxurious swarovski quartz, pearl, agate and so on, sparkles the eye-catching ray. The intoxicant appearance will let you unfold the graceful makings all the time. How can't you be moved?

女人的美是发自内心的，正如 IDee 女鞋，不经意间流露出独特的美，轻易悸动人心； IDee 女鞋设计新颖独特，造型典雅又不失时尚，镶嵌系列更是配以奢华的施华洛世奇水晶、珍珠、玛瑙等，闪耀夺目光芒，醉人神采由心而发，让您时刻展现优雅气质，又怎能不动人心弦

Women's beauty sourses from heart, just like the IDee jewelry reveals unique beauty carelessly, palpitates the will of the people easily. The IDee clothing are all designed uniquely, both elegant and fashion. Especially the series of mounting is matched by luxurious swarovski quartz, pearl, agate and so on, sparkles the eye-catching ray. The intoxicant appearance will let you unfold the graceful makings all the time. How can't you be moved? Wearing the charming IDee jewelry, your mood will be bright everyday. The IDee jewelry is worth possessing!

IDee 产品世界产品世界：女人的美是发自内心的，正如 IDee 女装，不经意间流露出独特的美，轻易悸动人心； IDee 女装设计新颖独特，造型典雅又不失时尚，镶嵌系列更是配以奢华的施华洛世奇水晶，珍珠，玛瑙等，闪耀夺目光芒，醉人神采由心而发，让您时刻展现优雅气质，又怎能不动人心弦……魅力的 IDee 女装令人心花怒放，与它相伴心情自然也舞动起来，IDee 女装值得拥有。

Women's beauty sourses from heart, just like the IDee jewelry reveals unique beauty carelessly, palpitates the will of the people easily. The IDee clothing are all designed uniquely, both elegant and fashion. Especially the series of mounting is matched by luxurious swarovski quartz, pearl, agate and so on, sparkles the eye-catching ray. The intoxicant appearance will let you unfold the graceful makings all the time. How can't you be moved?

女人的美是发自内心的，正如 IDee 女装，不经意间流露出独特的美，轻易悸动人心； IDee 女装设计新颖独特，造型典雅又不失时尚，镶嵌系列更是配以奢华的施华洛世奇水晶、珍珠、玛瑙等，闪耀夺目光芒，醉人神采由心而发，让您时刻展现优雅气质，又怎能不动人心弦

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。