low earth orbit

The station will operate in the low-Earth orbit at an altitude from 340 km to 450 km. It has a designed lifespan of 10 years, but experts believe it could last more than 15 years with appropriate maintenance and repairs.

空间站将在高度340至450公里的近地轨道运行，设计在轨飞行时间可达10年以上。专家表示，如果妥善维护，空间站的在轨飞行时间有可能超过15年。中国载人航天“三步走”战略

The two satellites were placed respectively in LEO ( low earth orbit ) and geostationary transfer orbit.

两颗卫星分别进入近地轨道和地球同步转移轨道.

One part, space tourism, is a luxury service that is, in any case, unlikely to go beyond low-Earth orbit at best ( the cost of getting even as far as the moon would reduce the number of potential clients to a handful).

一方面，太空旅行是一项奢侈的服务，不像冲出地球低轨道那么容易（这些如同与月球距离一般可观的巨额花费使潜在客人的数字减少到几个）。

Tracking and Data Relay Satellite ( TDRS) system is a communication system providing continous and real-time services such as tracking, telemetry, command and data relay for low-earth-orbit spacecraft.

中继卫星系统是一个为低轨航天器提供连续、实时的跟踪、测控与数据中继服务的卫星通信系统。

Modelling and analysing of space debris environment in low earth orbit

低地轨道空间碎片环境建模与分析

They're primarily designed for Low Earth Orbit ( LEO)-an easily accessible region of space from around 200 to 800 miles above Earth, where human-tended missions like the Hubble Space Telescope and the International Space Station ( ISS) hang out.

它们主要是为近地轨道而设计的——近地轨道是距离地球200至800英里的一个较为容易进入的空域，像哈勃太空望远镜和国际空间站这样需要人类维护的太空设施就在这里运行。