查询词典 elliptic orbit

The solution of the equation and the period of the particle motion for a non-pertubated system are expressed exactly by means of Jacobian elliptic function and the 1-st kind elliptic integral.Melnikov function of the rotated periodic orbit is constructed,and also bifurcation of the system is analyzed by the method.

利用Jacobian椭圆函数和椭圆积分给出了系统的解和粒子运动周期，用Melnikov方法构造了旋转型周期轨道的Melnikov函数，并用这个方法分析了系统的局部分叉性质。

An astronomical unit is the length of the semimajor axis of the orbit of a hypothetical planet of mass 1/354710sm and period 365.2563835 msd in elliptic motion about the Sun; that is

天文单位的定义改为：当公转周期为365.2568983263历书日时，一个假想的、质量为零的无摄动行星的椭圆轨道的半长径，等于一个天文单位。

Chaos and its control in the planar libration of a magnetic rigid spacecraft with internal damping in an elliptic orbit are investigated.

研究在具有内阻尼的磁性刚体航天器在椭圆轨道上平面天平动的混沌及其控制。

Occasionally, Pluto's highly elliptic orbit passes inside that of Neptune, making Neptune the furthest planet from the sun during these times.

有时，冥王星的高椭圆轨道内的传递海王星，使海王星离太阳最远的行星，在这些时间。

Chaotic planar libration and its control of a magnetic rigid spacecraft with internal damping in an elliptic orbit near the equatorial plane of the earth are investigated.

研究在地球万有引力场和磁场中具有结构内阻尼的磁性刚体航天器在近赤道椭圆轨道上平面天平动的混沌行为及其控制。

Pluto has an elliptic orbit.

冥王星的轨道是椭圆形的。

The chaotic planar attitude motion of a ligid spacecraft on an elliptic orbit in the gravitational field with air drag and internal damping and its control are studied. The necessary condition of occurring chaos is established by Melnikov's method. A numerical example is presented.

研究了同时存在大气阻力和结构内阻尼的椭圆轨道上平面天平动航天器的混沌姿态运动及其控制，应用〓方法给出了出现混沌的必要条件，用数值算例进行了验证。

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？。。。

Satellite in elliptic orbit has a low velocity near apogee and will flight over a particular geographical area for a substantial part of its orbital period ("apogee dwell").

由于运行于椭圆轨道上的卫星在其远地点附近有较长的停留时间，如果选择轨道远地点位于覆盖区域上空，则采用椭圆轨道卫星星座以进行区域性覆盖以取得很好的覆盖效果。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。