“emergency parachute”的概念、定义、翻译、参考文献-科学参考

单词	emergency parachute
释义	emergency parachute Encyclopedia 工学火箭弹射座椅释 emergency parachute救生伞飞机防护救生系统中，当飞机出现应急情况需要跳伞时，为拯救飞行人员生命、保证其安全着陆的救生工具。又称降落伞。
随便看	contraction relation contraction semigroup contraction theorem contractive contractive coefficient contractive factor contractive linear operator contractive mapping contractive-mapping principle contractive operator contractive operator-valued function contractive semi-group contractive semigroup contractivity contract law Contract Law of the People's Republic of China contract learning contract management of water conservancy project contract management system contract of charter party contract of novation contract of towage by sea contract of transferring land use right by government and by non-government contractor contractor liability insurance

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