搜索 - 科创

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一，背景与前提，伴随着国外业余火箭爱好者其发射高度不断的突破，这也使得国内众多爱好者开始制作探寻大总冲高性能动力装置的制作与研究。其动力装置基本分为固体火箭发动机，液体火箭发动机，固液混合火箭发动机。...

2016年来自北京超市的样品，在分析的九种植物油中，米油和山茶籽油的特点是受到MOSH的严重污染。对于米油，在第21-23号样品中发现了不同的污染水平，分别对应于24.44、11.58和713.36 ...

新人初来乍到，不懂之处还请指教。程序使用了MFC，怕有的计算机没装MFC库，使用了静态库，程序就稍微胖了点。。。贴上计算的代码，不知道是否有误? /*m_a,m_b,m_c,m_d分别对...

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