章动

In the modal of computing elevation angle and azimuth angle of satellite,we ignore the impact of precession,nutation and pole shift in the process of coordinate system transformation due to their small effects.

在卫星俯仰角和方位角的计算模型中，针对岁差、章动和极移的影响相对于卫星位置是二阶小量，因此在坐标系转换过程中忽略岁差、章动和极移的影响。

Vector nature of angular momentum, precession, conservation of vector angular momentum (its transfer between parts of a system), nutation.

角动量的矢量特性，进动，角动量守恒(它在系统内部之间的转移)，章动。

The azimuth of the host shaft was determined with A set of Eulerian angle (precession angleψ, nutation angleθ, self- rotation angle Φ).

用欧拉角（进动角ψ、章动角θ、为自转角Φ）确定刀具主轴方位。

Two nutation models of Mars from different interior structures are calculated.

完成了两个火星章动模型的计算、讨论了不同的火星分层结构将对火星章动结果的影响。

The coupling between interior electro-magnetic field and nutation is studied.

研究了地球内部电磁场与章动的耦合及其对章动的可能影响。

A new measurement method for nutation cycle has been put forward with the measuring theory of non contact vertical target.

提出了一种新的测量弹丸初始弹道章动周期的方法，采用非接触式光学立靶测量原理测量弹丸章动周期测量弹丸通过立靶的瞬时位置，计算出弹丸章动角，根据多组章动角数据获得弹丸的章动周期并提出了实现这一目标的测量系统的组成与功能，对系统的攻角测量准确度进行了分析

A method for separating the same periodical nutation and non—nutation terms from the Z—terms of ILS three group observations is developed.

本文提出了一种从ILS的三组观测Z项中分离相同周期的章动误差项与非章动项的方法。

The prolate body and the energy dissipation lead to the i nstability of the spinning. Two common control scheme was used to design the active nutation controller.

由于细长体和能量耗散的存在，导致了自旋运动的发散—章动运动，为此采用两种工程上常用的喷气主动控制方法设计了主动章动控制器。

As the Earth's rotation axis in space there is precession and nutation, by the effects of precession and nutation is called true sidereal day sidereal day, excluding the impact of nutation, only affected by the precession of the sidereal day sidereal day is called flat.

由于地球自转轴在空间存在岁差和章动，受岁差和章动影响的恒星日称为真恒星日，扣除章动的影响，仅受岁差影响的恒星日称为平恒星日。

The theoretical nutations of a non-rigid Earth are computed from a convolution of the rigid Earth nutation amplitude with a transfer function accounting for the geophysical parameters influencing the Earth rotation. The value of the Earth dynamical flattening correspounds to a scale in the rigid Earth nutation series.

在刚体地球章动振幅的计算中，地球动力学扁率值起着尺度因子的作用，要改善刚体地球章动振幅的计算，需要修改目前的黄经总岁差值。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。