- 更多网络例句与近地点相关的网络例句 [注：此内容来源于网络，仅供参考]
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The Q is - do you mean Pluto in its aphelion or perihelion ?
我的问题是，冥王星此时是在近地点还是远地点？
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Cases, a satellite along the elliptic orbit orbiting satellite operation, the perigee from the planet center distance is a, well locations from the planet center distance b, if the satellite perigee rate is Va, the satellite apogee when the rate Vb how much?...
例、某卫星沿椭圆轨道绕行星运行，近地点离行星中心的距离是a，远地点离行星中心的距离为b，若卫星在近地点的速率为Va，则卫星在远地点时的速率Vb多少？。。。
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The orbit of the equatorial satellite is designed with perigee at 550km, apogee at 60 000km, and the inclination of 28.5°; the orbit of the polar satellite is designed with perigee at 700km, apogee at 40 000km, and the inclination of 90°.
近地赤道区卫星的轨道是：近地点550km左右，远地点60000km左右，倾角约28.5°；近地极区卫星的轨道是：近地点700km，远地点40000km，倾角约90。
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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。
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Satellite from apogee to perigee movement speed of its potential energy to kinetic energy changes - has been answered ...
人造卫星从远地点向近地点运动时它的势能动能速度如何变化-已回答。。。
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When the satellite perigee to apogee from the movement, its potential energy, kinetic energy, how the speed changes.
当卫星从近地点向远地点运动时，它的势能，动能，速度怎么变化。
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The probe was transferred to an orbit with a perigee of about 600 km, up from the former 200-km perigee, according to the Beijing Aerospace Control Center.
探针转移了到一条轨道以大约600公里近地点，从前200公里近地点起，根据北京航空航天控制中心。
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Because 14 lunar months almost exactly equal 15 returns to perigee.
新月和月球近地点同时发生的周期是14个阴历月，因为14个阴历月几乎精确地等同于15个阳历月的转动返回到近地点。
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In fact, tonight's Moon reaches its full phase at 1637 UT, within only a few hours of perigee, the closest point in its elliptical orbit.
事实上，今晚的月亮将在世界时间16点37分达到满月相位，仅仅是月球在到达近地点数个小时之后，月球位于近地点时，其椭圆轨道距离地球最近。
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The following conclusions are drawn. 1 The orbit parameters that have relatively greater influence on the number and latitudinal distribution of annual occultation events are orbit inclination, orbit height, Right Ascension of Ascending Node and Argument of Perigee in turn. All four parameters have little impact on the longitudinal distribution of annual occultation events. 2 The orbit inclination of Transmitting Satellite and Receiving Satellite impacts both LEO－LEO occultation events number and their latitudinal distribution most. The number of occultation events reaches the maximum as the sum of the two inclination angles nears 180 degrees. The one that far away from 90 degrees of the two inclination angles determines the latitude range of the occultation events. 3 LEO－LEO occultation events number reaches a maximum when the heights of TS and RS are the same, and it reaches the maximum when the heights of TS and RS are 600 km . 4 The RAAN of TS and RS has a great influence on the LEO－LEO occultation number, but has little influence on occultation distribution.
结果指出：1对一年掩星事件数量及其纬度分布影响大的轨道参数依次是轨道倾角、轨道高度、升交点赤经和近地点角距；而这些参数对一年掩星事件的经度分布影响都不大；2发射卫星和接收卫星倾角之间的相互关系对掩星事件数量和纬度分布影响最大，两卫星倾角接近互补时掩星事件最多，两颗LEO卫星中与90°相差较大的倾角决定了LEO－LEO掩星事件的纬度分布范围；3发射卫星和接收卫星处于同一轨道高度时，LEO－LEO掩星事件数取得极大值，发射卫星和接收卫星都采用600 km的轨道高度，一年LEO－LEO掩星事件数最多；4 发射卫星和接收卫星升交点赤经的相互关系对LEO－LEO掩星事件数量影响很大，发射卫星和接收卫星升交点赤经之差为120°或240°时掩星事件数量最多，RAAN对掩星事件纬度和经度分布影响不大；5近地点角距对掩星事件数量和分布影响都不大。
- 更多网络解释与近地点相关的网络解释 [注：此内容来源于网络，仅供参考]
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lower apsis：近地点
lower apron 水下部分 | lower apsis 近地点 | lower atmosphere layer 低层大气层
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perigee：近地点
但没听说有人读过>这样含三十万词目、共计五千九百万字的二十卷本鸿篇巨制,直到最近读到2008年"近地点"(Perigee) 出版社的新书::一人,一年,21,730页>>(Reading the OED:One Man, One Year, 21730 Pages).
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perigee：近地点;最低点
perigee passage time 过近地点时间 | perigee 近地点;最低点 | periglacial climate 冰缘气候
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perigee altitude：近地点高度
perigee 近地点 | perigee altitude 近地点高度 | periglacial deposits 冰缘沉积
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perigee distance：近地点距离
perigee altitude 近地点高度 | perigee distance 近地点距离 | perigon 周角
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Tide,perigee：近地点潮
"分潮","Tide,partial" | "近地点潮","Tide,perigee" | "气压潮","Tide,pressure"
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He worked so hard that the weariness pervaded his whole body.perigeen：天]近地点
He went into a paroxysm of rage. 他勃然大... | He worked so hard that the weariness pervaded his whole body.perigeen.[ 天]近地点 | He's always ready to chime in with his opinion. 他随时准备插嘴,表示自己...
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perigean：近地点的
perigean tides 近点潮 | perigean 近地点的 | perigee 近地点
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perigean velocity：近地点速度
pericenter 近中心点 | perigean velocity 近地点速度 | perigee 近地点
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perigean tide：近地点潮
peridotite shell ==> 橄榄岩壳层,上地幔 | perigean tide ==> 近地点潮 | perigee ==> 近地点