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救生伞
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救生伞
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火箭弹射座椅
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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。
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Heawood
Heawood conjecture
Heawood four-color graph
Heawood graph
HEB
He Baatar
He banality of evil
He Bange
Hebao Dao
Heba Sheng
Heba Yue
Hebbian learning
Hebbian rule
Hebb learning
Hebb learning rule
Hebb学习
Hebe
Hebei
Hebei Art Museum
Hebei Art Research Institute
Hebei Baicaowa Provincial Nature Reserve
Hebei Baicaowa Shengji Ziran Baohuqu
Hebei Baiyangdian Shidi Niaolei Shengji Ziran Baohuqu
Hebei Bangzi opera
Hebei Bangzi Opera Troupe of Beijing
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