搜索 - 科创

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开头，先放两张固定翼拍的照片引：这个项目本来是用于参加大学生“挑战杯”的，本身对这种套近乎拼导师比赛不是特比感兴趣，但是某校领导一再那啥，想推脱又推脱不了，后来校赛也没过估计评委直接当危险品处...

发动机尺寸内径64mm外径70mm长505mm304无缝不锈钢管燃料柱内径26mm外径57mm长210mm两根燃料柱隔热壳壁厚3mm具体见（[RNX]直径70mm长度505mm 固体火箭发动机试车 -...

蒸馏浓硫酸硝酸钾混合物制备发烟HNO31.材料：98%H2SO4 、KNO3干燥KN20min，充分除去水分。(KN来源于化肥，已重结晶两遍）2.加料根据方程式，投入150克KN,加入15...

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