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车间。,通过这个合作的过程,工程师们可以马上
制造
出士兵想要的零件,而士兵也可以立即试用并提供反馈。
粉笔炸弹带来的反思——对高中趣味化学实验的异议
zane
11年3个月前
回复于
化学
内容:依稀记得最深就是开始时看到老师在空气中让白磷自燃引发了全班的小伙伴集体吸气,随后还有点印象的是
制造
氧气试图凑前去吸上一口防备呛了下。。。
省油几倍的新型发动机工作原理
hamdad
17年5个月前
回复于
极客DIY
内容:楼上的朋友要是
制造
出了效率(消耗单位燃料输出的机械功率总能量/单位燃料完全燃烧理论输出的总热能)≮80%切实可以工作并内部没有什么猫儿腻狗儿腻的内燃机工程样机,估计诺贝尔奖委员会还没有来的急给您颁奖,您已经被
任意插座
hamdad
15年9个月前
回复于
极客DIY
内容:楼主过分高估了天朝
制造
两脚扁平电源插头这样简单电气零件的水平,姑且不找出相关国家标准规定的机械公差数值来论证,随便找您家的两只两脚扁平电源插头,用卡尺仔细丈量一下,铜片厚度、两脚内间距、两脚外宽度,绝对无法雷同
没见今天有贴!大家来讨论一下旋转的问题。
skyline
11年9个月前
回复于
电磁炮
内容:你说的最后那个问题起码十年前各国的研究机构就已经解决了,收小尾弹翼直径小于弹体最大直径就可以解决尾翼和管子摩擦的问题了,只是
制造
工艺比较麻烦
制造
成本高,只能用于科学研究和玩玩还能那么搞,大规模装备的弹那么搞的话成本伤不起
关于组建个人电子技术实验室装备的一些探讨
cycloneman
13年11个月前
回复于
电子技术
内容:铅主要用于
制造
铅蓄电池;铅合金可用于铸铅字,做焊锡;铅还用来
制造
放射性辐射、X射线的防护设备;铅及其化合物对人体有较大毒性,并可在人体内积累。
回 2楼(拔刀斋) 的帖子
企鹅
11年4个月前
回复于
科学技术学
内容:任务模式,和
制造
业。,土星我设计和
制造
。,土星IB的设计和
制造
。,点火和
制造
的h - 1发动机。,5照片皮肤
制造
的年代集成电路阶段。
【DIY】脉冲电容
black
15年7个月前
回复于
高电压技术
内容:(取决于本身电容量)话说没有人看到这个脉冲电容的价值,(还整天叫着“电磁武器电磁武器”的,其实很简单的电路就可以
制造
出手掌大小,峰值功率达到几千瓦的干扰器的说~或者是激光甚至是效果非常好的tesla coil
国内人力飞机“墨子号”在沪亮相(图)
拔刀斋
15年1个月前
发表于
极客DIY
内容:“人力飞机的
制造
工艺非常复杂,它的驱动完全依靠人踩踏板,而没有外在动力。,目前国际上只有美、英、日、德等国家能够
制造
,在我国真正试飞成功的,这还是第一架。”
采购电容
TUNGUSKA
16年11个月前
回复于
电子技术
内容:体积、重量、成本有限制的情况下,以目前的器件
制造
水平,似乎业余研究电磁武器,传统的滤波电解电容是唯一的选择,工作状态非常接近于照相机闪光灯的储能电容。
既然电势没有绝对的零点,那么两脚都接地的电容的两极之间相互排斥吗?
拔刀斋
15年1个月前
回复于
电子技术
内容:我立即想出突破 半导体极限
制造
高速芯片的办法。
开坑,准备设计一个EEG(脑电波)输入法怎么样
smith
8年8个月前
回复于
电子技术
内容:引用 牛逼大仙:想起了这个故事,1968年,被下放到单位食堂劳动的杨嘉墀曾经临时参加了一项特殊的工作:为在爆炸事故中受重伤的北京礼花厂女职工王世芬
制造
假肢。
探讨下关于定向放电的技术```
west_0830
15年4个月前
回复于
电磁炮
内容:或许今后在坦克上能够见到这类武器,或者再后来,搞清楚了球形闪电的原理,可以
制造
这种球了就差不多了。
节能发动机
大仙
16年5个月前
发表于
电气电工
内容:里克·梅恩希望美国的三大汽车
制造
公司——福特、克莱斯勒和通用汽车公司——考虑把它用在“未来汽车”上。
高端离心机离心头
adj1202
9年4个月前
回复于
跳蚤市场
内容:我这个其实也带的电机 也是德国
制造
的,转速13000,三相变频电机,非常安静,电机留着自己玩
怎样捕捉和储存雷电
kangyuhelf2
15年7个月前
回复于
极客DIY
内容:引用第5楼black于2009-06-22 20:44发表的 :其实特斯拉知道这一切他曾经伟大的利用大气电离层中的电能,成功的
制造
了一次大爆炸——通古斯大爆炸建议多去了解特斯拉这个人,他的成就不仅仅是特斯拉线圈而已
没见今天有贴!大家来讨论一下旋转的问题。
skyline
11年9个月前
回复于
电磁炮
内容:
制造
成本?,小口径尾翼弹的缺点只是
制造
工艺麻烦成本高,至于供弹,那不也是
制造
成本的一部分么?,那种弹体一旦进入人体就剧烈翻滚入口几毫米穿出来就和成了碗口那么大的洞形的杀伤力没得比,2战时候被常规弹击中的士兵不管打到任何部位不死都是重伤瞬间就会失去继续战斗的能力,被三八大盖击中的士兵只要没被打中要害往往都能坚持继续战斗.所以,现在各国不装备尾稳弹木仓的原因只是尾稳弹
制造
成本过高不划算再加上尾稳弹先天的高速远射程的优势在打击软目标时候会造成弹体过于稳定对软目标杀伤效率不高的缺点,至于你说的用在电炮上尾稳弹尾翼偶和度下降,效率下降怎么解决,这就是技术问题有待大家去寻找解决之道了(实际上你说的这问题在现在这个管内折叠尾翼弹丸出膛后尾翼再打开技术早已经成熟且在不少军事装备上普及开了的年代,也仅仅是个
制造
成本的问题而已,几年的时候美国的一片论文设计了一种提高尾稳步木仓弹杀伤效率的没良心结构,靠在弹体内防止弹簧和小钢珠强迫尾稳弹进入软目标后翻滚,既保持了尾稳弹远射程高速度的优势又保证了尾稳弹对于软目标的杀伤效果,那货的
制造
成本更高
单向道钉
玄明
13年3个月前
发表于
极客DIY
内容:这个道钉如果真的被
制造
为钉子的形状会很不结实,而且正向行驶的汽车在大马力通过时也有被轧的风险。
液晶屏摔坏了还能修好吗?
hamdad
16年4个月前
回复于
电子技术
内容:多摔坏的BP机,涉及排线断裂故障的,MOTO的机器最好修,因为设计是双层特氟龙薄膜夹线,断裂甚至发生内伤都可以用漆包线焊接飞通,但是LCD本身断裂或者国产机器,基本没有修复成功过,排线是聚酯薄膜印刷导电胶
制造
的
不以宇宙航行或探索前沿为目标的火箭爱好都是耍流氓
虎哥
8年5个月前
回复于
喷气推进
内容:是的,前沿领域普通化以后,
制造
和服务就会越来越成为一件标准化的事情,并且足够廉价。
火箭发射失败
abc123456789
8年10个月前
回复于
喷气推进
内容:黑药发动机是机械化
制造
的发展方向,手工做可靠性不高 烧制木炭。
给大家发一个国外火箭爱好者的视频、
trample
14年5个月前
回复于
喷气推进
内容:引用第10楼柠檬酸于2010-09-05 12:43发表的 :这个端面发动机、是如何
制造
的吖、?
RS-A-3.1发动机图纸
atlas
15年3个月前
回复于
喷气推进
内容:如果各零件已可以使用模具标准化生产,大量
制造
就不成问题。
讲个笑话:今天在楼下餐馆买了一台3D打印机
warmonkey
10个月18天前
回复于
机械与工具
内容:韭菜特点是吹牛逼厉害、干活不行,因此只能走
制造
业最底层的廉价路线,利润还比不上发达地区一个小作坊。
群里面有没有朋友试做过飞轮电池的!!
samhrc
12年6个月前
回复于
电子技术
内容:没有理论计算和对零件加工
制造
装配十分的把握可别试验,危险!
回 31楼(acmilan) 的帖子
我说要有光
12年5个月前
回复于
软件综合
内容:具体为什么选择了Linux而不是通过BSD来完全规避GNU协议我不是很清楚,但可以确定的一点是Google目前在GNU和允许闭源的法律协议之间是收放自如的此外,闭源世界不可能形成真正的优胜劣汰,因为通过破坏标准
制造
孤岛来避免自身受到淘汰是闭源软件的常规做法
MIT新技术实现24小时工作的太阳能系统
mass_lynnxy
16年6个月前
发表于
电气电工
内容:我们现在所作的就是
制造
一种催化剂能够在不使用额外的能量下对氧原子进行分解。,Nocera预计:“太阳能电池
制造
商可以往他们的系统添加廉价的电解槽,在一天24小时里的7小时用以分解氧和氢,晚上再利用燃料电池重新合成氢和氧以产生电力。”
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