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燃气-蒸汽轮机
大仙
16年5个月前
发表于
电气电工
内容:发展联合循环的关键是要研制出高温、
高性能
、大功率的燃气轮机。
太阳电池能源网
大仙
16年5个月前
发表于
电气电工
内容:要实施这项计划,首先要研制
高性能
、低成本的太阳电池;其次要开发高温超导电缆;再次是在世界各国建设太阳光发电系统,在发展中国家建筑太阳电池生产厂。
新人调查贴
bh,王者归来
11年0个月前
发表于
喷气推进
内容:我本人也曾经是一名新手,玩过各种火箭燃料,从KN系列,到RNX等低能燃料,再从自主创新改良RAP得到APER中能燃料到和航天局共同开发新一代
高性能
APCP燃料,并完成国内最大的高能燃料固体发动机试车。
飞吧~F35~~多功能耳机放大器 陆续更新
vocal@ルカ
14年5个月前
回复于
电子技术
内容:~~~~(>_<)~~~~ HIFIDIY
高性能
用的是固态 可是均天价 自己diy用固态胆电容不错[s:92]没有风枪 烙铁24H接地 待机
沉默的来信:关于科创火箭下步计划的建议
虎哥
13年1个月前
发表于
喷气推进
内容:因为技术、加工、经费等多种限制,导致了片面追求低成本的决策,这势必降低火箭的可靠性和安全性,以牺牲可靠性的方法去一赌产品的
高性能
,无异于缘木求鱼;以低投入的代价去实现产品的高可靠性,似乎有些舍本逐末。,这几天一直在关注论坛上的讨论,我觉得其中有一条建议很好,那就是整合各地的资源,发挥各方面的优势来开发
高性能
、高可靠性的产品。
固体燃料与液体燃料火箭发动机
CIT
1年6个月前
发表于
喷气推进
严肃内容: 预印本
内容:固体燃料火箭发动机的未来趋势5.1
高性能
固体燃料的研究与应用
高性能
固体燃料是未来固体燃料火箭发动机的研究方向之一。,
高性能
固体燃料具有比传统固体燃料更高的比冲和比推力,同时具有更好的热稳定性和存储稳定性。,目前,国内外已经有不少
高性能
固体燃料的研究成果,并已应用于实际项目中。,未来,随着对
高性能
固体燃料的深入研究,其在固体燃料火箭发动机中的应用将会得到进一步扩展。
新唐公司推出了价钱可以媲美stm8的51内核单片机
大仙
7年7个月前
发表于
电子技术
内容:< 2% 误差之高精确度16 MHz RC晶振与高分辨率8通道12位ADC;并具备自我唤醒、欠压检测等功能;提供TSSOP20 (4mm*6.5mm) 与QFN20 (3mm*3mm) 小封装,兼具
高性能
与设计弹性
纳米金刚石,从工业到生物科技的“刚”化之路
流落到四川
5年3个月前
发表于
晶体养成所
内容:纳米金刚石的超能应用 与普通金刚石一样,纳米金刚石的高硬度使其能很好的满足打磨需求,同时由于其独特性质,纳米金刚石在精密抛光和润滑、化工催化、复合镀层、
高性能
金属基复合材料、化学分析及生物医药等领域都得到了广泛的应用,此外,纳米金刚石还能与金属材料相结合,使用纳米金刚石颗粒增强钢铁基复合材料,在相当程度上能解决
高性能
特钢的问题。
村田电子:小零件中体现绿色环保理念
mass_lynnxy
16年4个月前
发表于
电子技术
内容:大功率锂离子二次电池 要进一步普及混合动力车型,就必须做到马达动力源,即二次电池(充电电池)的
高性能
化, 村田现在正在开发混合动力车用“大功率锂离子二次电池”。,近几年,CO2吸收材料的有效应用倍受关注,吸收大约自身体积100倍的
高性能
吸附材料被视为有望在今后的CO2削减中发挥作用。,邵琪表示,“吸食CO2的小石子”Ba2TiO4不仅是再利用随电容器生产产生的废弃物、防止地球变暖的材料,还是可以将CO2变成产品制造资源的
高性能
材料,可达到“一举三得”的效果。
大家有没有算过自己高压包的磁芯是否饱和
kuanglong7
15年3个月前
回复于
高电压技术
内容:但是没有什么磁芯适合特斯拉这样的大安匝数高频率的场合,少数能承受的
高性能
磁芯材料也是很昂贵的,不是一般人买得起的。
最新LHmini非金属固体火箭发动机提前公布(冲刺目标的发动机设计)+ 一种发动机的故障原因分析方法
FROZEN巨擘
8年11个月前
回复于
喷气推进
内容:其实发动机爆炸都可以解释为这几个问题,
高性能
的难点就是要综合解决这些问题,而不是做一台性能一般的发动机。
一个制作喷口堵头的好材料。。。。。
west_0830
15年9个月前
回复于
喷气推进
内容:引用第6楼a403564804于2009-05-10 11:08发表的 :堵漏王 堵漏王是指一种
高性能
、集无机、无碱、防水、防潮、抗裂、抗渗、堵漏于一体的最新高科技产品.其最神奇的特性是:迅速凝固且密度和强度都远远高于现行高标号混泥土
DSP器件已经事实上被淘汰
spadger
1年8个月前
回复于
计算机电子学
内容:其实也是在萎缩的,X和A两大厂商都被收购就很说明问题,原因也很简单,FPGA作为一种半定制器件,填补的是没有现成ASIC可以使用的场合,市场一旦稍微大一点有钱赚了,马上就会有ASIC出来填补空白,以更
高性能
DIY内燃炮
vocal@ルカ
13年0个月前
回复于
电磁炮
内容:这个气罐很好买 户外用品店都有 且便宜 一个就7¥产品名称:户外气炉长气罐用途:露营等运动颜色:深蓝色重量:290克产品型号:长气罐产品介绍韩国麦森气罐是由韩国MAXSUN燃气具厂采用现代工艺制造壳体,罐装
高性能
丁烷气
金属空心锥形的一些研究与实验
煎鸡蛋
2个月17天前
回复于
机械与工具
内容:最好是自带说明书的成品添加剂,提前框定大多数变量(例如温度等),只需要努力达成添加剂的条件,即可收获
高性能
的成品。
突发奇想,老仪器焕发第二春
柿子大大
3年4个月前
发表于
仪器仪表
内容:推荐里的gpib卡拉起点点回忆,想到桌面上的老示波器狭小的屏幕,看到虎哥的MSO拆机帖子,突然灵机一动,一个方案已经在头脑中拟定了正文作为一个以模拟电路为业余爱好的学(qiong)生(bi),为了兼顾低价和
高性能
趣书:液体火箭燃料的历史和基本问题
拔刀斋
10年0个月前
回复于
喷气推进
内容:现在有不少自认为化学学得非常好的人,他们设计了不少“
高性能
”推进剂,从而嘲笑别人还用如此低级的推进剂,其实他根本不知道这玩意早就...
18级光电IGBT高斯枪
iSee
7年0个月前
回复于
电磁炮
内容:我的期望是在8级或0.5米以内以600v电压做出有性价比的
高性能
设备。,小体积
高性能
我觉得是最重要的,为此可以在效率上做一些妥协。
走了,送一张,国内私营航天企业的图
拔刀斋
11年6个月前
发表于
喷气推进
内容:XXXXXXXXXXXXXXXXXXXXXXXXXX/P2/CC3009/0911/XXXXXXXXXXXXXXm北 京威标至远科技发展有限公司是专业从事
高性能
军用训练器材的国家级高新技术企业,公司致力于北威系列靶弹项目的研发与生产, 北京 2013-06-04
高性能
计算中心系统支持工程师
我的火箭模型经历
chaozhou
10年8个月前
回复于
喷气推进
内容:但我觉得用氯炭还不如硝糖,粉药要高密度才能稳定燃烧,那么就要使劲压药,这个燃料稍敏感,不适合太用力,所以上高压的话我觉得这个药没戏,而不上高压又不能发挥出
高性能
,所以用这个药可能会性能比较差并且存在安全隐患
学生党自制万焦轨道炮的计划书
yurifreeman
10年2个月前
回复于
电磁炮
内容:LZ应该做的是计算烧蚀阀速度然后设计注入炮→_→轨道炮有不是乐高,随随便便就能拼出来一个
高性能
的。。
【每日一YY】建立《科创模块化发展和标准设立局》
立棍
11年6个月前
发表于
社区公务
内容:这样大家研制出一部分
高性能
电路,随时能搭配其他模块进行工作。
拆一个比较少见的平板转子直流电机
slof
3年11个月前
回复于
拆机鉴赏
内容:低速伺服驱动对电机要求较高,一般那种3-8极的简易直流电机,因为转子铁芯和外固定磁极有吸引力,低速运行时会有一跳一跳的那种现象,无法获得
高性能
输出,高速运行时就基本没问题。
初次画PCB,求大神指教
pc98sofuto
9年2个月前
回复于
极客DIY
内容:非常感谢您的建议 这块板子我的目标其实是想最大化的利用AVR系列MCU的
高性能
优势以达到减少外围器件复杂度和降低产品成本的目的的 因为AVR内置复位上拉电阻且可以软件延时复位 所以我就不想用外接复位
闭环步进电机驱动
RodTech
1年1个月前
回复于
极客DIY
内容:_wkts_=1696718421663至于所谓的加减速机,时间换精度,这种拍脑袋想当然的事情,不考虑成本的情况下,花
高性能
光编伺服的10倍价格买个无回差谐波减速机的精度我还真测过,比这个驱动轴自带的磁编伺服性能还要差一个量级
CSX620 64B运算加速卡,厂家提供开发工具和开发包,我想知怎么样用这些东西请人开发
jrcsh
14年0个月前
回复于
软件综合
内容:◆ 早期的CELL处理器双精度性能也较低,为了将其应用于
高性能
计算,加强了双精度浮点计算的性能。
著名敌台BBC告别中文短波广播
立棍
13年10个月前
回复于
电子技术
内容:现在听短波受折磨的成分更大,我似乎只剩下叶公好龙式的一点喜爱,几千块钱的
高性能
短波接收机我一个月可以买下一两台。
科创人搞液体火箭可行么?
warmonkey
15年10个月前
回复于
喷气推进
内容:涡喷不算火箭,但是用涡喷的技术可以做出涡轮泵,有了涡轮泵就有
高性能
的液体火箭我也在想液体火箭的事,可是没有加工机械。
国内还没有类似国外像样的业余火箭发射
warmonkey
9年1个月前
回复于
喷气推进
内容:修复中XXXXXXXXXXXXXXXXXXXXXXXX/t/73030YT-5 玉兔五号导航技术验证箭 作者KCSA广州项目组 射高440m (惯性导航+气压高度计+遥测)采用战术级陀螺仪/加速度计和
高性能
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