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回复于
电子技术
内容:引用第5楼warmonkey于2011-08-25 20:51发表的 :LZ可以等科创推出
低成本
便携式频谱仪示波器做频谱仪,性能太低了,ADC的动态范围不够。
科创的科学家们,请来这里畅想未来十五年
samhrc
10年8个月前
回复于
科学技术学
内容:将来半导体器件达到大功率
低成本
到一定水平了。,直流系统的好处是显而易见的,但是换流站复杂和高造价制约了直流系统的发展,如果将来半导体器件达到大功率
低成本
到一定水平了。
Arduino Mega 2560以太网开关,用iPad控制电器开关!
justinpiggy
12年11个月前
回复于
电子技术
内容:引用第9楼luxin88于2012-02-02 13:11发表的 :LZ此物如可以缩小体积 降
低成本
前景广阔啊 可以用ATMega328的MCU的,那个只有13个digital Out,但是还是可以通过
无人货运飞机
虎哥
7年11个月前
回复于
极客DIY
内容:一切为降
低成本
而优化,放弃速度,在油上还能更省。
新手做的固体火箭发动机
子羽
14年5个月前
回复于
喷气推进
内容:最
低成本
不到10元最高成本60元
[提问] 关于固液火箭
猎鹰
11年0个月前
回复于
喷气推进
内容:很多燃料都挺适合当做粘接剂的,比如环氧树脂 ...就是因为没人想到合适的氧化剂所以没人尝试,而且固体燃料价格极其高昂,要是用固体燃料既没了固体火箭的简单也没了固液火箭的
低成本
。
我在电路边,捡到一分钱
rudolf
10年2个月前
回复于
电子技术
内容:在降
低成本
的同时提升了产品的竞争力。
美国最小的运载火箭
拔刀斋
14年5个月前
发表于
喷气推进
内容:Dynetics正在与USASMDC/ARSTRAT和COLSA公司一同研发MNMS推进系统,这是一型
低成本
、多构型简易导弹,可用于多种战术级亚轨道和轨道应用。 ,MNMS利用一个极
低成本
、模块化、安全且可储备的液体推进系统,极大地改善了导弹系统的可靠性和及时响应性。,不同于以往研发
低成本
小型火箭的想法,MNMS系统旨在满足作战及时响应型任务的需求。,为满足
低成本
和环境安全方面的目标,该系统具备了以下特征:
低成本
材料、安全燃料和氧化剂(乙烷和笑气)、充压推进剂、“按需生产能力”的模块化集成、“装运与发射”的途径、以及最低限度的需求。
我的DR啊,弄死都不出电弧,调压器都调到200V了~!
rudolf
9年4个月前
回复于
高电压技术
内容:如果只是
低成本
,验证性的试验,管子过载一下关系不大,但是如果要做可靠的东西,传统的DR还是应该使用模块。
自动调整光线的窗户
立棍
13年3个月前
发表于
极客DIY
内容:请大家设计一个方案,尽量用简单的工艺和
低成本
,生产出这种东西。
关于个人做空股票的创新想法!!
阿拉丁
15年2个月前
发表于
极客DIY
内容:说创新,也不算什么创新,就是做空交易,现在国家不准许做空交易,但我觉得不影响个人之间的这种交易,例如:甲方持有10000股
低成本
的工商银行股票,乙方持有资金,但股市趋势可能已不适合做多。
25mm光固化喷口发动机的研发
TonyStark
3年4个月前
回复于
喷气推进
内容:我觉得光固化喷管是很值得推广的,在中小型发动机中具有
低成本
,易制造的特点,对入门很友好。
谈开源硬件与电磁枪
随天
8年11个月前
回复于
电磁炮
内容:如果真的在经过足够多的创意积累之后出现了某种
低成本
、高实用性,并且达到上世纪的军用武器威力的方案,并且在淘宝上以模块化进行销售的话。
在淘宝上看到的0-60V 100A ELTEK SMPS5000电源,大家看怎样
slof
12年9个月前
回复于
仪器仪表
内容:不如降
低成本
买30A的那种,便宜一半,还轻巧。
回 64楼(dennis) 的帖子
天易
12年11个月前
回复于
极客DIY
内容:近期不会出天文望远镜的,主要原因有二个:一是暂时无法
低成本
地批量生产配件(主要是变焦目镜部分);二是望远镜和显微镜的“合二为一”的问题还没能很好地解决(和变焦目镜不是一个概念),在没有后续技术储备的情况下
[极致压缩&极低成本]中中8 带关断电磁炮也卷起来啦╮(╯▽╰)╭
肖特基的救赎
3年8个月前
回复于
电磁炮
内容:提个建议,mos管使用进口拆机元件可以再降
低成本
,可靠性比国产全新的还高。
我的DR啊,弄死都不出电弧,调压器都调到200V了~!
rudolf
9年4个月前
回复于
高电压技术
内容:但是经验法操作的东西,低端领域是为了
低成本
克服技术门槛。
【日本庆应大学、群马大学数据】电动汽车和燃油汽车能量利用率对比
虎哥
5年9个月前
回复于
电动汽车
内容:尽管比机械传动有效率上的显著优势,却根本无法
低成本
的做到小汽车上。
多功能高频高频焊台首版终于完工
rocket_man_8
6年8个月前
发表于
会员海报
内容:强大的曲线过程控温功能,
低成本
改造烤箱为高档烤箱,用于涂装烘干等需要过程温度控制的应用;当然你也可以用它
低成本
自制回流焊机!
利用太阳能大量雾化海水资源水人工干预环境变化????
hambaby
14年8个月前
回复于
极客DIY
内容:采取太阳能方式对于海水脱盐,由于效率低,成本/产出比极不合理,目前停留在实验室阶段或者某些特殊环境如海岛居民的少量饮水用途。
闭环步进电机驱动
amo
1年1个月前
回复于
极客DIY
内容:另外,普通
低成本
步进电机,用于高精度场合貌似不合适。
【开源】HX9500.02扫频仪试验电路图和程序
虎哥
13年0个月前
发表于
仪器仪表
内容:改善全频段的频率步进(step)、采用超外差电路进行检波,以便消除跟踪源谐波对动态范围的影响;采用二次变频,在高第一中频用较宽的中频带宽,在第二本振采用频率范围比较窄,但步距很小的PLL进行频率微调,从而
低成本
实现全频段小步进,这一系列实验提供了多种思路,为开发相关
低成本
仪器提供了经验,大家感兴趣的话可以继续研究。
NASA测试3D打印火箭部件
skylighter
11年6个月前
发表于
机械与工具
内容:试验成功后,NASA宣布加大其生产规模,实现可行的
低成本
制造。
关于气球30000米以上高空摄影问题初步构思
binglayueshe
10年2个月前
回复于
航空技术
内容:漂移确实是个大问题,所以第一个验证球会追求
低成本
,同时尽量收集气象资料。
[转帖] [分享] 开源3D打印机Printrbot JR 仅售399美元
skylighter
11年10个月前
发表于
机械与工具
内容:Brook Drumm 曾尝试购买散装零件、改变设计及本地采购零部件以降
低成本
。
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