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回复于
科学技术学
内容:但事实就是你无权,你的苦在有权者看来和其它问题(如社保、国民经济、政治稳定)这些比起来根本不是问题,何况最近又有那些专家学者对教育问题提出过严重警告呢?
TRIZ创新理论简介
1211
19年2个月前
发表于
科学技术学
内容:现实中的冲突是千差万别的,如果不加以归纳则无法建立稳定的解决途径。
人民为什么反对读职高?
虎哥
3年3个月前
发表于
科学技术学
内容:再来看看2009年之前的数据:可以看出,2009年以前,非普通高中和普高的比例是比较稳定的,绝对数量都随着扩招而迅速增加。
我的迟到了很久的RNX
wall哥
12年9个月前
发表于
喷气推进
内容:这是点火器,激光遥控,盒子是我用竹筷子做的 悲剧原因分析:1、650固化剂制作的燃料性能不好 2、发射架用PVC制作,导致融化的悲剧3、起始喷燃比过低,起飞时推力过小,速度不足,无法达到气动稳定速度
1987年最小的二次变频数调收音机机,索尼SW1
铅球脑袋
2年6个月前
发表于
拆机鉴赏
内容:一本振的稳定纯净,对接收质量很重要。
较低成本简单制作发动机推力数据收集
LSEQY
1年4个月前
发表于
喷气推进
电子技术
内容:(目前据我了解到很多学生党要自己搞推力采集,但是大部分都会栽在内存卡部分)使用spi通讯协议对内存卡进行读写本身spi协议就足够稳定足够优秀(那为什么会出现这种情况)首先我个人的情况是因为内存卡容量大小,(目前据我了解到很多学生党要自己搞推力采集,但是大部分都会栽在内存卡部分)使用spi通讯协议对内存卡进行读写本身spi协议就足够稳定足够优秀(那为什么会出现这种情况)首先我个人的情况是因为内存卡容量大小
记一次汽油发动机汽缸垫维修过程
ehco
5年8个月前
发表于
机械与工具
动手实践: 实验报导
内容:于是乎开启全网搜索模式,发现不止一人这么做过,而且大量摩托机车玩家还故意将原装汽缸垫换成紫铜垫,用以提高寿命和保持稳定的压缩比。
小小纽扣电池大大学问阿 (转
jrcsh
14年11个月前
发表于
电子技术
内容:金盖与夹盖价格比白盖高,但质量很好,放电稳定防漏液效果好,适用于产品出口及长时间运输。,SR41;G3;SR736;V392;SG3;SR41W.----------------------------3V CR锂锰钮扣电池系列是采用进口材料,日本防漏液技术,对高温环境潮湿有较强的抗干扰,放电稳定时间长,低内部电阻,高工作电压,可发挥稳定的放电特性。
如何使电机具备符合需求的特性:无刷电机的节能控制——PWM
公众号EV技研作者1900
4年11个月前
发表于
电动汽车
内容:在 EV 行驶时,对加速踏板发出的指令是很敏感的, 电机转矩也会大幅度波动,EV 就会变成一台行驶不 稳定的车。,为了保护器件,也为了让电机的转矩稳定,可 以考虑把控制对象从电源电流变为相电流。
申请科创A资金用于铝壳固机开发
ROSCOSMOS
10年1个月前
发表于
科创基金
内容:考虑到可能买到质次品,以及燃烧的不稳定性,所以我认为此次模拟的危险性较高。
初来炸到,找到组织了,谈谈我对SRM的看法
chenxiaochun511
8年5个月前
发表于
喷气推进
内容:通过设计一个发动机的大致的数据就可以确定 然后根据总体所需要的参数进行药柱的选择 药柱的选择是发动机设计的关键步骤 动力的核心是药柱燃烧进而产生推力 因此确定药柱的尺寸 长度 装药的数量 等等至关重要 同时需要对所选的药柱进行稳定性分析
我国子午工程首枚探空火箭试验成功
薛定谔的猫
13年8个月前
发表于
喷气推进
内容:43秒时,火箭高度升至60公里,火箭转速稳定至约2转/秒,箭头与箭体分离,电场仪伸杆展开;至46秒,火箭高度升至65公里,朗缪尔探针伸杆解锁、展开;215秒达到196公里轨道顶点;420秒,再入大气层,
谈谈自己做火箭的一点经验、
tyty
9年8个月前
发表于
喷气推进
内容:级数越多不稳定因素越大,失败几率更大。
分享一个小型特斯拉线圈的设计文件与制造图纸
薛定谔的猫
8年10个月前
发表于
高电压技术
严肃内容: 专著/论述
内容:下面这几张是2014年会时候的照片,那个时候线圈的初级支架还没有设计完善,TC也没有仔细调试过工作点,所以并不是很
稳定。
谁说的视屏传输这么难啊随便来一个都1-5km超小的1km
野心家
15年2个月前
回复于
极客DIY
内容:、台式,19寸1U机箱7、适用于多基站、城域大范围覆盖;8、抗多径干扰,在高楼林立的城市仍正常工作;9、AES加密,密钥长度128位10、工作频段:P/L/S波段(可选 )11、最高时速600公里时仍稳定传输图像针对的应用问题
48v20ah一体化叠芯锂电池,高级货哦
天易
9年6个月前
回复于
跳蚤市场
内容:启域一体化叠芯锂电池产品特点 一体 一体化结构,保护每个电芯,一致性更好、更
稳定。
,分体结构的电池组,因其电源管理是各自独立的,所以整体性能会受限于最差的那组电芯,导致电池组一致性及稳定性差。
申请A基金 新型含能化合物工艺研发资金(I)
哈哈哈哈哈士奇
7年0个月前
回复于
科创基金
内容:因它们普遍地具有高能量、高密度、较高的热稳定性和较低的感度,又被称为新一代炸药或新世纪炸药。,反应消除活泼氢影响并对生成的羟烷基母体进行二次修饰并二次优化3:与氨基化合物取代消除活泼氢并二次优化例二:氮杂芳环类设计产物含有多种“致敏”官能团(叠氮、硝胺、硝基等):VNS胺化,利用氨基强给电子效应适当减小环张力及形成氢键提高分子稳定性
固体火箭入门简介
novakon
8年8个月前
发表于
喷气推进
内容:尾翼 火箭于一定速度下实现朝向稳定之必备气动结构,通常为薄片状,安装在接近尾端处。,发射架 一种便于拆装的支架,旨在限制火箭箭体于一条直线上来回滑动,可为火箭提供初始飞行方向,其长度/高度应确保火箭在离开发射架前即获得足够的速度(所谓出架速度),以利用尾翼保持朝向
稳定。
气相二氧化硅.介绍
hx
12年5个月前
发表于
喷气推进
内容:Airosilk 气相二氧化硅(气相白碳黑)是极其重要的高科技超微细无机新材料之一,由于其粒径很小,因此比表面积大,表面吸附力强,表面能大,化学纯度高、分散性能好、热阻、电阻等方面具有特异的性能,以其优越的稳定性,特性 ◇作为液体的触变剂和增稠剂,防沉淀、防流挂; ◇改善颜料填料在液体体系中悬浮性和分散性; ◇用作分散和研磨助剂; ◇提高涂层耐腐蚀性; ◇提高粉末流动性、贮存稳定性; ◇改善粉末带电量及电荷稳定性,涂料 我国是涂料生产和消费大国,但当前国产涂料普遍存在着性能方面的不足,诸如悬浮稳定性差、触变性差、耐候性差、耐洗刷性差等,致使每年需进口大量高质量的涂料。,会增加发生皮肤癌以及产生化学性过敏等问题,而气相二氧化硅(气相白碳黑)为无机成分,易于与化妆品其它组分配伍,无毒、无味,不存在上述问题,且自身为白色,可以简单地加以着色,尤其可贵的是气相二氧化硅(气相白碳黑)反射紫外能力强、稳定性好,抗菌材料 利用气相二氧化硅(气相白碳黑)庞大的比表面积、表面多介孔结构和超强的吸附能力以及奇异的理化特性,将银离子等功能离子均匀地设计到气相二氧化硅(气相白碳黑)表面的介孔中,并实施稳定,成功开发出高效
我的DR啊,弄死都不出电弧,调压器都调到200V了~!
rb-sama
9年4个月前
回复于
高电压技术
内容:不能因为你学习懂了DRSSTC的理论体系,就认为DRSSTC调出电弧够稳定,就相当于到巅峰了。
欢迎参加2013年度中国业余火箭竞赛
leeqingyang
12年1个月前
发表于
喷气推进
内容:摇移尽量准确稳定,画面勿要颤抖,有必要时请使用三脚架等稳定工具;5 本次比赛接受多段视频,请勿私自将视频剪辑至一起。
压控恒流LED驱动器
novakon
10年5个月前
发表于
电子技术
内容:现在要求流经LED的电流是可调且稳定的。
略谈电解电容 转
绘梦工坊
14年6个月前
发表于
电子技术
内容:略谈电解电容一、电解电容在电路中的作用 1,滤波作用,在电源电路中,整流电路将交流变成脉动的直流,而在整流电路之后接入一个较大容量的电解电容,利用其充放电特性,使整流后的脉动直流电压变成相对比较稳定的直流电压
思维、创造技法的统一性及计算机发明的实现
李泽健
15年6个月前
发表于
科学技术学
内容:3、“性质”,性质是指物质本身所固有的或者是与其他物质在相互作用的过程中所表现出来的稳定的属性。,①这里的稳定性是指能重复出现的意思,只能出现一次的现象不能称为性质。,②物质本身所固有的性质是指在一定的条件下,物质所具有的各种稳定的属性。
信仰者诡辩术辞典
虎哥
7年0个月前
发表于
科学技术学
内容:这涉及治疗的规范性和疗效的稳定性问题,难以理性的辩论,因此容易加深冲突。,尽管从体系上来看中医没有可靠性、一致性,疗效不稳定甚至经不起考核,但这是另一个系统性话题,并不是用局部问题来指责它的理由。,这个例子生动的展现了人们的思维局限:对于一个复杂的、多个原因导致一个结果的现象,人们往往关注其中那个最稳定、相关度最高、最容易理解、最符合生物本能直觉、最具绝对解释力、最不可能被否定的原因,并逐渐在思维中把它视为单一原因,然而由于它最稳定,甚至相当于常量,所以往往最不重要。
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