... ballistics弹道学 ballistite火箭固体燃料 ballond'e ai问路石子 ...
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... 弹道学 ballistics 混成无烟火药 ballistite 气球 balloon ...
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ballistite-type propeller 弹道炸药型推进剂
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同义词: smokeless powder
以上来源于: WordNet
smokeless powder
His many other inventions -- including explosive materials like the smokeless powder Ballistite -- were used for militaristic, mining, construction and other industrial purposes.
BBC: Sweden��s Nobel gift to the world
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