The inward or return flight of a spacecraft. This includes the space shuttle's re-entry and landing, as well as the Apollo flights returning from the Moon in the 1960s and early 1970s. An ingress flight is the opposite of an egress flight.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。