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.
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。
To do well the reasonable analysis and management of the right of use for the transverse space of roads is an important measure for improving the benefit of urban road transportation system.
做好道路横向空间使用权的合理分析与管理是提高城市道路交通运输系统效益的重要措施。
The multi-level structure of erosion, transportation and accumulation in a slope system and its space scale effect are very important for the soil erosion quantity evaluation.
分析了土壤侵蚀中的侵蚀、搬运、堆积的层次结构及所表现的空间尺度效应的形式、产生的机制和原因。
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