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聚丁二烯丙烯酸-高氯酸铵推进剂
space polybutadiene acrylic acid-ammonium perchlorate propellant
聚丁二烯丙烯酸高氯酸铵推进剂火箭燃料
gen. polybutadiene-acrylic acid-ammonium perchlorate propellant

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