“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	circulation service circulation storehouses circulation system of agricultural products circulation theorem circulation theorem of electrostatic field circulation theory of history circulator circulators circulatory integral circulatory motion circulatory system circules circulizer circum-angle circumanticevian triangle circumcenter circumcentre circumcevian triangle circumcircle circumcircle mid-arc triangle circumcircle of a regular polygon circumcircle of a triangle circumcision circumconic circumellipse

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