In his popular unique “The Moon is a Severe Girlfriend,” Robert A. Heinlein explains a future lunar negotiation where future lunar locals (“Loonies”) send out hauls of wheat and water ice to Planet utilizing an electro-magnetic catapult.
发布者:Dr.Durant,转转请注明出处:https://robotalks.cn/china-proposes-magnetic-launch-system-for-sending-resources-back-to-earth-2/