本文对利用低推力推进装置将卫星从低地轨道转移到静地轨道的可行性在技术上和经济上重新作了评价。

This paper makes an undated assessment of the technical and economic feasibility of transferring satellites from low Earth Orbit to Geostationary Orbit using low thrust propulsion.

此外，正在制定之中的一些规划会让低地轨道变得更加繁忙，并且变得对地球上的通讯更加重要。

And plans are being made to make low orbit even busier, and more essential for communications on Earth.

更糟糕的是，每一次类似的碰撞都会制造出一大堆碎片，有可能引发导致低地轨道不可使用的连锁碰撞反应。

Worse, each strike like that creates a cloud of shrapnel, potentially setting off a chain reaction of collisions that could render low orbit unusable.

本文将广西易涝区分为沿江低地型，河口区低地型及喀斯特谷洼地型三大类。

The areas where are liable to waterlogging in Guangxi are divided into three types:low lands along the rivers, low lands in the river mouth areas and the karst valleys and depressions.

丘陵间低地农民基于资历分为三类。

Intervale farmers are divided into three categories based on seniority.