美航宇局签订了一项租用建议中的约在1993年用航天飞机发射的工业空间设备(ISF)的合同,该合同使美国较公开宣布了里根总统多次宣传的国家空间政策。由于美航宇局早些时候不愿涉足由人照管的ISF,该政策推迟实行,ISF不论是在经费预算上还是在功能作用方面都可以和空间站相媲美。该政策赞成把航天工程例如ISF商业化,是里根总统着眼于长远航天计划作出的第一道命令,实行该政 NASA signed a rental contract for a proposed spacecraft (ISF) about 1993 launched by a space shuttle, which has made the United States publicly declare President National’s space policy repeatedly advocated by President Reagan. This policy was postponed due to the reluctance of NASA to set foot in the manned ISF earlier, and the ISF was comparable to the space station both in terms of budget and function. The policy, which favors the commercialization of aerospace engineering such as ISF, was the first order President Reagan focused on the long-range space program to implement