“二级弹射动力系统”的概念、定义、翻译、参考文献-科学参考

单词	二级弹射动力系统
释义	二级弹射动力系统 Encyclopedia 工学火箭弹射座椅释 second-stage propulsion system for ejection seat二级弹射动力系统飞机防护救生系统中，在人和火箭弹射座椅系统出舱后，用于将人椅系统推至预定安全开伞高度的异形固体火箭系统。一般固定安装在火箭弹射座椅下方或椅背后面。
随便看	user datagram protocol protocol user datagram protocol, UDP user-defined character-formation program user-defined word-formation program user documentation user elevation database user equivalent range error user experience User Experience Alliance China user experience design user experience design, UED user experience expert User Experience Professional Association user feedback user generated content user-generated content user-generated content, UGC User Generated Content，UGC user-generated content，UGC user identification code user identity user information attention user information behavior user information cognition user information consciousness

科学参考收录了854744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。