开展低成本运载火箭、新型上面级、天地往返可重复使用运输系统等技术研究。
China will conduct research into the technologies for low-cost launch vehicles, new upper stage and the reusable space transportation system between the earth and low-earth orbit.
瓶颈分析：一种对系统(例如送货系统，运输系统等)中的瓶颈进行专门分析的方法。
Bottleneck analysis: Type of analysis concentrating on bottlenecks in system, e. g. delivery systems, transportation systems.
提出了基于GIS等时线分析方法的理论模型，以城市公共交通运输系统的主要工具——公共汽车和城市火车为例，描述了等时线分析的设计原型。
Through the analysis of the urban public transportation system, a new theoretical model based on GIS isochrone approach is put forward and a design prototype is described with an isochrone analysis.
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