查询词典 precession

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。

Quantitative analysis of the angular velocity gyroscope precession.

定量的分析陀螺进动的角速度。

The specific research contents include: celestial coordinates The establishment of the Department; Sunday apparent motion of celestial bodies and the anniversary of the apparent motion; celestial parallax, atmospheric refraction, optical aberration, precession, nutation theory and applications; astronomical time measurement principles and time systems; depending on the location of celestial bodies return calculation methods.

具体的研究内容有：天球坐标系的建立；天体的周日视运动和周年视运动；天体的视差、大气折射、光行差、岁差、章动的理论及应用；天文时间计量的原则和时间系统的建立；天体视位置的归算方法等。

In this article, we will use this novel finite particle method to analyse several important and interesting dynamics problems in neat/insighting style, including the maximum and minimum period problem of the compound pendulum oscillation, plane impact problem and the spin and precession direction problems of the oblate and prolate satellites.

本文将透过先进的有限质点法，以极简的风格来分析几种重要而有趣的动力问题，包括复摆的最大及最小周期、刚体的角碰撞问题、薄碟型人造卫星公自转反向问题以及细长型人造卫星公自转同向问题。

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。

Over the course of 26,000 years, the precession of the equinoxes makes one full circuit around the ecliptic.

在26000年中，该分点岁差使黄道附近的一个完整的电路。

According to the requirements of precession, the motion equation of the spatial mechanism is developed.

在此基础上，根据进动要求建立了这一空间机构的进动运动方程，通过仿真研究了气囊进动过程中运动参数的变化规律。

The experiment results show that the method is effective in estimating precession angle and cycle when the precession angle is not very large.

实验结果表明，该方法在目标进动角不大条件下可以有效估计目标的进动角和进动周期。

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 effect of lunisolar precession is analyzed in this paper. It is found that the lunisolar precession affects the exact measures of P of pulsars.

通过对日月岁差效应的分析，发现它已经影响到了某些脉冲星的周期的精密测量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。