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约找到 1021 条结果,耗时 0.197 秒
暴雨中显现中国黄土治理的成绩
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1年3个月前
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语言文学
内容:因为煤除了直接烧,还可以发电,做
水泥
。
E局。。麻烦下。。。催化陶瓷。。。
喵小酱
11年11个月前
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喷气推进
内容:这边正在做50水-乙醇发动机,因为催化室问题在纠结,原定用
水泥
二氧化锰造粒催化,后经试验发现在每秒100g的情况下只有很小一部分被催化分解,现正在试验能溶于乙醇的催化剂。
又发现了一个可靠堵头
kangyuhelf2
15年7个月前
回复于
喷气推进
内容:纸堵头本来强度就已经不错,没必要搞什么
水泥
堵头,搞湿了燃料反而前功尽弃,貌似这个方法已经介绍过好多次了吧
我做的水泥喷口..
飞天狂想
16年7个月前
回复于
喷气推进
内容:引用第5楼syncmaster于2008-07-18 16:32发表的 :就是不爆 你有没有见过火灾现场`~~~
水泥
被火一烧就变的很脆~~~温度在高就暴掉了
ABC火箭技术之 PVC管缩口适配技术
嫦娥姐姐
16年3个月前
回复于
喷气推进
内容:谢谢大师兄:
水泥
喷管和发动机纸壳体的粘接选用什么材料?
标准化系列火箭所有图片专贴-喷口2
940104
15年8个月前
回复于
喷气推进
内容:喷口用堵漏王做很好为什么要用
水泥
呢 。。。。。
卷芯喷口改进篇<2>
inception
12年0个月前
回复于
喷气推进
内容:80份
水泥
掺20份环氧,不加热你试试?
路牙石搬运机
qq030711
10年4个月前
回复于
极客DIY
内容:关于高低能否把
水泥
铺好大概压平,用个模子去试高低,试好了直接下石头。
破火箭```
原野风暴
15年2个月前
发表于
喷气推进
内容:里面是硬质试管衬纸外面耐热胶带抗压喷口是泥三角拆的环氧树脂+牛皮纸砂纸加固堵头是
水泥
+502+厕纸 =。
10厘米发动机试车
海绵宝宝
9年2个月前
发表于
喷气推进
内容:上几次的发动机都爆口了,这次把白
水泥
换成了云石胶,坚固许多, 我也没有拍发动机的图片,我就发发试车的图片,推力也巨大,打算 一会儿试飞,不加降落伞,单一个发动机,希望不会打到人,先发图 工作开头
MSFRM--IB测试失败总结
远山
8年11个月前
回复于
喷气推进
内容:实在找不到就用石膏粉或者
水泥
粉 ,总之隔层不能小于一厘米厚度
猜猜哪个喷口最吊
七公里垃圾站职业技术学院
9年9个月前
回复于
喷气推进
内容:我大制能猜出来排序,但1号除外,纯环氧喷口(在混合时不小心混入了一点点的
水泥
,变了一点色)
找回感觉的一试——KNDX系列标准化发动机供大家参考
d185345878
14年1个月前
回复于
喷气推进
内容:我都用金属管,就是喷嘴和堵头用
水泥
,搞的发动机装药比下降。
KC901S日记--打造人人都能拥有的,真正的,矢量天线和阻抗分析仪
turbolag
9年9个月前
回复于
仪器仪表
内容:虎哥确实落伍了,铅片好贵呢,一般HIFI功放都是加
水泥
块
小谈自制火箭的经过
wuym2
14年2个月前
发表于
喷气推进
内容:一共做了两次发动机测试,第一次堵头喷了,
水泥
砂浆加502做的我自己都看不过去了。,喷嘴是
水泥
砂浆加二合一胶水混制,并且包了一下头,随便找了一根15厘米长的铁管那么重没有想到能飞起来总重怎么也得1KG以上啊。
RS-A-1.1测试报告
warmonkey
15年11个月前
发表于
喷气推进
内容:胶水固定喷管烧蚀深度:1.5-2mm(已炸出)堵头材料:纸巾+502胶+AB胶封口、气密堵头烧蚀深度:0.8-1mm工作后的喷管 红色部分已炸毁以后的改进(应用于RS-A-1.3):喷管:3mm拉瓦尔喷管,材料为
水泥
,30%,树脂60%,石墨10%堵头:内嵌点火头,材料为AB胶75%、
水泥
25%,内插铁钉,厚度0.8cm燃料:KNSU(66:34)重结晶,3mm内孔预制药柱,两端和内孔同时燃烧。
[原创]谁研究过市场上的胶水的
west_0830
17年6个月前
回复于
喷气推进
内容:环氧树脂是引进澳洲原料和工艺生产通过环氧改性与强力固化剂反应而成的建筑装饰产品.产品成型后.形成网状结构,刚性强.粘力好.耐热.耐腐蚀.不吸水,收缩率小等特点.环氧树脂是天花板.石膏收缩缝连接的优异刚性材料.另外.可用于陶瓷.
水泥
板大理石,还可以用在金属与非金属.陶瓷 .
水泥
板.大理石 管材等之间的刚性连接.执行标准 gb 18583-2001[em01]
火箭喷口用纯水泥做还是混点沙子做??
west_0830
16年0个月前
回复于
喷气推进
内容:耐火
水泥
混耐火泥在加热处理过的沙子这种方法做出来的才好。
回 1楼(传奇先生) 的帖子
邪恶的yin
12年7个月前
回复于
喷气推进
内容:堵漏王或者
水泥
的还行,不过都要被烧蚀。
塑钢土根本不能做喷口
jingrongren
10年0个月前
回复于
喷气推进
内容:引用 ironfly:我看國外的
水泥
噴口還加了小石頭進去,應該在結構上能增加強度!
新手设计的火箭A
MGS
4年6个月前
回复于
喷气推进
内容:zl这样的喷管扩张段没接起来,不知道算直喷还是拉喷,…建议堵漏王或者
水泥
喷管,性价比高又好制做。
我敢打赌。。。这个固液发动机是你这辈子能看到的最坑爹的
喵小酱
11年9个月前
回复于
喷气推进
内容:我这个窗户底下是没有任何可燃物及窗台的,只有一个四平米的
水泥
台
路牙石搬运机
愣猪
10年5个月前
回复于
极客DIY
内容:可以搞个自动浇筑
水泥
成型的啊很多都是滑模现浇施工的,, 但是我就是个干活的,,管不着啊,, 就像怎么省力气干活而已
簡單草圖發表,看看這樣能組裝不?
ビリビリ女
14年0个月前
回复于
电磁炮
内容:并不是我想泼你冷水……这东西你确定能飞出去么……50A……5KA的话也许能飞出去,以某个少年的说法,电容得有两个萝莉那么重还打不穿一块
水泥
砖。
~爆炸会阻断燃烧?cr-1y测试报告及视频~
3ha510
15年7个月前
发表于
喷气推进
内容:[s:92] PVC发动机双端缩口,卷芯+速干
水泥
喷管,速干
水泥
堵头。
手工制作石墨喷管指南
法式油炸薯条
9年8个月前
回复于
喷气推进
内容:顺便一提,我认为石墨喷管从各方面都能辗压堵漏王,502+纸,
水泥
等。
刚设计,自作的火箭推力测试平台即将完工,求认可,求意见。
百年海军
9年9个月前
回复于
喷气推进
内容:壕无人性,我们这些穷人就50块买一个钻机架用来夹持,放在
水泥
墙后防爆.像楼主这样有床有米的,好羡慕,好羡慕.
纯新手向线圈炮制作教程(纯新手向,内容作死。)
Einstein
10年3个月前
回复于
电磁炮
内容:充电电流太大了不好,我一般在次级串一个100Ω,10W的
水泥
电阻,充电大约2秒钟,变压器啥声音都没有,就是那个电阻充一次就滚烫的
锐钛矿
用户已注销
16年7个月前
发表于
地理与地质
内容:我的第一件真正意义上的矿物标本就是这个锐钛矿.在得到它之前收集的标本很难被看做真正的矿物标本.它们大部分都没有特征晶型和母岩.甚至还有那糊了绿色
水泥
的紫水晶.这个标本非常小,只有1厘米左右,但是不得不说
发个实验活跃气氛——制取稀硝酸
smith
6年4个月前
回复于
化学
内容:老外教的一种方法,把医疗用的低浓度过氧化氢,敞开放到一个干燥阴凉通风的地方,比如说野外一截
水泥
管的中间,过一段时间后过氧化氢的浓度可以显著提高.
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