搜索 - 科创

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内径32mm，总长150mm，适用于KNSB燃料设计图为PDF格式，3d文件为step或sldprt格式，可用solidwork打开总价49.9元可在闲鱼平台下单，我的账号：EPS_studio‎‎‎

个人认为在制作火箭发动机的时候要确定所需的总冲量，来决定燃料/氧化剂质量。从而决定发动机的设计参数和结构

很抱歉，当了一次伸手党，不知道是不是科新社还没编完，但好久了，看着目录很期待下面的内容，可是这么久了也没有动静，能弱弱的问一下大神们，到底是个什么情况啊？？？

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