搜索 - 科创

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前言大家在试车自己的固体火箭发动机时，如果喷管厚度或者喉衬烧蚀材料厚度没有精准的计算，可能会造成安全事故和喷管过度烧蚀导致其变形及烧穿。因此本教程旨在精准计算喷管喉部金属厚度，喉衬烧蚀材料厚度，并且为...

引用第1楼jimmy_xu_wrk于09-08-25 02:07发表的 :破叉用上繁體字了……不過程式里的字元是繁簡同形的……呃……交几个Bug，小问题，可以无视的：1、开链接最好能直接运行"htt...

看了一下ebay，好像没有我想象中那么贵。确实如果有八九k欧元或美金，运气优秀是可能搞到一套beam能开起来的古代SEM的。但是SEM这东西是需要维护的，stage是会卡住的，filament甚至FE...

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