搜索 - 科创

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我是机械设计制造及自动化　０３级学生　　今年大３了　　眼看就要毕业了　　但我目前对自己所学的专业从大一到大三　感觉很空空啊　　有些课当时学得时候还是可以的　　　但　时间一长　＜有些是大一学的＞到现在　...

今天几个同学去实验制作的火箭，五次都失败了，把情况发上来，希望大家帮帮忙，谢谢我们采用的是论坛里的ABC微型火箭技术，采用二型ＢＰ推进剂配方燃料，发动机长6cm箭身用的是PVC水管，长30cm头部用的...

我在培养前借鉴了前人的制作办法来制作硫酸铜晶体，但是每一次都出现一个神奇的现象在溶液表面出现很小的结晶（为什么说是结晶呢，因为我把这些拿出来之后加水是溶解了的）然后就是配置溶液时出现的问题（没拍到图）...

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