查询词典 orbit

And now astronomers have voted for the best pictures taken by Hubble in its 16 years in orbit.

哈勃在自己的轨道上16年来拍的照片，到目前为止都是天文学家们公认的最好的图片。

But rather, it had a hyperbolic orbit...

而是按双曲线轨道运行。。。

Such a mission would probably need to surpass 200AU from the Sun in a hyperbolic escape orbit.

这样的一个探测器可能需要沿双曲逃逸轨道在距太阳 200天文单位处越过。

First chapter talked about the hyperbolic orbit.

第一章是双曲线轨道力学。在天体力学和卫星轨道力学所涉及的书籍和有关文献中，很少提及双曲线轨道，更不会讨论在受摄情况下这种轨道的变化规律。

A comet is speeding along a hyperbolic orbit toward the Sun.

6-35。一颗彗星沿著双曲线轨道加速飞向太阳

One important feature ofHamiltonian systems is that it has energy(its energic function is Hamiltonian func-tion),then,its solutions on 2-dimensional plane are some contour lines,the points onstable manifold emanating from hyperbolic equilibrium point have the same energyas that on unstable manifold,then,one can guess that they form a closed curve,i.e.homoclinic orbits under certain conditions,and the contour lines in the innerpart of homoclinic orbit are periodic orbits.

哈氏系统的一个重要特征是它有能量存在(以Hamiltonian函数作为它的能量)，那么在二维平面上，它的解表现为一些等值线，从双曲平衡点发出的稳定流形和不稳定流形上的点具有相同的能量，那么可以猜测，在一定条件下它们构成一条封闭的曲线，即同宿轨，而且其内部的等值线都是周期轨道。

The movie then zooms back into the system to show the orbit of the moon Iapetus in blue.

视频接着回到蓝色的土卫八轨道展示了土星系统。

Both the ring and Phoebe orbit in the opposite direction of Saturn's other rings and most of its moons, including Titan and Iapetus.

新环和土卫9的运行方向与土星主光环以及包括较大的土卫六和土卫八的大部分卫星的方向相反。

Only particles that orbit the magnetic mirror, where it faces us directly, can flow back toward us and are captured by IBEX.

只有粒子轨道的磁镜，在那里我们面临直接流向我们可以回是由苗捕获。

In Taiwan, majority of the PV arrays presently are installed towards south with 23.5 degrees immovably. But the orbit of sun is different everyday, the fixed direction of the PV array could not make the conversion efficiency maximum.

在台湾大部分的太阳能板皆固定以朝南23.5安装，但每天的太阳运动轨迹皆同，安装角固定的太阳能板发电效无法发挥最大效。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。