A command to stop the throttled engines, signalled by computer then called out by the commander. This operation occurs nearly nine minutes into the flight and 16 seconds before the empty external fuel tank is jettisoned.
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。