四艘太阳能——电推进的货船在地球轨道和月球轨道之间运行,每一百天可以运载20公吨货物到月球基地。去年春天国家空间委员会要求“二十一世纪架起星球之一间桥梁,开辟太阳系通路”时,据悉该委员会已建议研制高性能电推进装置。电推进装置使要经历长时间才能达到目的地的大批货物有可能实现低成本 Four solar-electric propulsion vessels operate between Earth’s orbit and lunar orbit, carrying 20 tonnes of cargo per day to the Moon’s base. Last spring, when the National Space Commission demanded “building a bridge between the planets in the 21st century and opening up the path of the solar system,” it has been reported that the commission has proposed the development of a high-performance electric propulsion device. Electric propulsion makes it possible to achieve low costs for large quantities of goods that will take a long time to reach their destination