搜索 - 科创

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一种是喷砂枪的枪嘴，一种是氩弧焊的嘴。二者是都氧化铝陶瓷。上面的是氩弧焊的嘴。大约四毛五一个。上面是喷砂枪的枪嘴，大约6毛钱一个。喷砂枪枪嘴尺寸。不知道哪种好。各位给点意见。

自己做的一大段中空KNSU。水分很多但是可以烧。楼顶。堵头是一团试卷,自然飞掉了,结果发动机把自己顶了起来点击此处查看视频重结晶。纸管。

以前发的探讨：https://www.kechuang.org/t/44656因为复读高三一年，这个设计项目也就拖了一年~~~~~~~~~~~感兴趣且有条件使用机床的同学可以尝试一下~~~~~~~~~...

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