查询词典 orbit

But it is more likely that Rhea is uniquely suited to hold debris in orbit.

但"土卫五"更有可能是独一无二的，适合将碎片限制在轨道上。

Based on low satellites on orbit and STK platform, some parameters of space-based optical system such as observation direction, Right Ascension of the Ascending Node and True Anomaly are set and optimized in this paper, which will lay a foundation theoretically for the design of space-based optical system.

本文以在轨运行的低轨卫星为研究对象，以卫星工具包STK为平台对天基光学系统的观察方向、升交点赤经和真近点角等参数进行了优化设置，为天基光学系统的设计任务奠定理论基础。

Launch vehicle: Rocket system that boosts a spacecraft into Earth orbit or beyond Earth's gravitational pull.

运载火箭：将航天器推入绕地球轨道或脱离地球引力范围的火箭系统。

Launch vehicle: Rocket system that boost s a spacecraft into Earth orbit or beyond Earth's gravitational pull.

运载火箭：将航天器推入绕地球轨道或脱离地球引力范围的火箭系统。

"Partially reusable rocket -launched vehicle developed by NASA to go into Earth orbit, transport people and cargo between Earth and orbiting spacecraft, and glide to a runway landing on Earth."

由美国国家航空暨太空总署研制的进入地球轨道，为地球和轨道运行航天器运送人员和货物，并能滑翔回地面着陆的可部分重复使用的火箭助推的运载机。

This was followed by investment in road construction, land acquisition costs of demolition and construction investment as well as the latter part of orbit of the investment in rolling stock procurement.

其次是在道路建设，拆迁和建设投资，以及在车辆采购投资的轨道下半年投资收购土地的费用。

Each year, the Moon steals some of Earths rotational energy, and uses it to propel itself about 3.8 centimeters higher in its orbit.

每年，月球都会偷取地球的部分转动能，让自己在运行轨道中的位置升高大约3.8厘米。

Each year, the Moon steal s some of Earth's rotational energy, and uses it to propel itself about 3.8 centimeters higher in its orbit.

每年，月球都会偷取地球的部分转动能，让自己在运行轨道中的位置升高大约3.8厘米。

Each year, the Moon steals some of Earth's rotational energy, and uses it to propel itself about 3.8 centimeters higher in its orbit.

每年，月球都会偷取地球的部分转动能，让自己在运行轨道中的位置升高大约3.8厘米。

In science and technology to achieve the first of the four, it is necessary to develop and launch China's first extraterrestrial objects and the landing detector detectors to inspect for the first time the use of the "Long March Route B" on the transfer of launch vehicle and spacecraft orbit for the first time The establishment and use of deep-space monitoring and control network for monitoring and control communications, for the first time to achieve a soft landing on the moon, the face on tour, the Spring River, and so the survival of a major breakthrough, carried out on tables topography and geological structure, mineral composition and chemical composition of the internal structure of the moon, the earth-moon Table on the environment and space exploration, and other activities supporting the basic completion of the lunar exploration engineering system.

在科学技术方面，实现四个第一，要研制并发射中国第一个地外天体着陆探测器和巡视探测器，第一次利用"长征三号乙"运载火箭发射地月转移轨道航天器，第一次建立和使用深空测控网进行测控通信，第一次实现月球软着陆、月面巡视、月夜生存等重大突破，开展月表地形地貌与地质构造、矿物组成和化学成分、月球内部结构、地月空间与月表环境等探测活动，建成基本配套的月球探测工程系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。