holes相关论文
This brief note introduces the conceptual framework of special and general relativity isoclocks and isoframes. Isoclocks......
We use a semi-analytic galaxy formation model to study the co-evolution of supermassive black holes(SMBHs) with their ho......
Phase structures and transitions of quintessence surrounding RN black holes in a grand canonical ens
Considering a grand canonical ensemble,we study the phase structures and transitions of RN black holes surrounded by qui......
The shielding property of cylinder with circular, square, and equilateral triangle holes was investigated by finite elem......
Chaotic inflation is inconsistent with the observational constraint at 68% CL. Here, we show that the enhancement mechan......
We review steady spherically symmetric accretion onto a renormalization group improved Schwarzschild space-time,which is......
Using observations in the past four years with the All Sky Monitor(ASM) onboard the Rossi X-ray Timing Explorer(RXTE) an......
The shielding property of cylinder with circular,square,and equilateral triangle holes was investigated by finite elemen......
We present the results obtained from detailed timing and spectral studies of a black hole candidate MAXI J1813-095 using......
研究了电子隧穿出射端嵌入1.2 μm厚n型弱掺杂GaAs层的三势垒双阱隧穿结构,观察到了隧穿峰谷比高达36的光生空穴共振隧穿峰.研究证......
Polygonal models are popular representations of 3D objects. The use of polygonal models in computational applications of......
The problem of void growth and interaction is of importance to understanding the mechanics of failure in metals exhibiti......
The problem of void growth and interaction is of importance to understanding the mechanics of failure in metals exhibiti......
介绍了采场中部掏槽破在峨口铁矿的应用,提供了一级比较合理的爆破参数,供数似矿山的生产作参考。......
宏指令可以实现丰富的宏功能,包括算术运算、逻辑运算等,这些高级功能可以大大简化编程、减少人工计算并提高程序通用性,文中以孔系加......
Strength and failure characteristics of sandstone containing two circular holes filled with two type
Plate shaped sandstones containing two fabricated circular holes that were filled with gypsum and high-strength concrete......
宏程序可使用变量进行编程,并具有算术与逻辑运算功能,利用其可对不同工艺方案走刀路线的长度进行计算,并通过比较判断,选择最短的......
本文通过多项式近似导出了一种可变网络的时域有限差分算法。其空间网格能沿任意轴向变化,而且具有高阶离散精度,从而节省了机时,提高......
通过对广东某火力发电厂2号锅炉一级过热器发生爆管的情况进行了化学成份分析、力学性能试验和金相检验,发现爆管处存在大量孔洞及......
在筛板萃取塔中引入气体搅动,既能明显提高装置的传质效率,又能大幅提高装置处理能力。筛板塔的通量随气速的变化规律与填料塔有显著......
The Quantization of Black Holes, Lower Mass Limit, Temperature, and Lifetime of Black Holes in a Sim
We have shown that the permittivity of space grows for a beam of light as the gravitational field increases. Also, we ha......
应用法兰同轴测试装置测试了两组含有不同孔洞大小的电磁屏蔽织物的屏蔽效能,测试结果显示,不同大小的孔洞对屏蔽织物屏蔽效能的影响......
应用弹性力学的复变函数理论,采用多保角变换的方法,推出了含有任意多孔有限大平板的多复变量应力函数的表达式.在内边界上进行复F......
对单板层积材(LVL)搁栅进行三点弯曲试验,分析并对比开孔搁栅及未开孔搁栅的破坏模式,研究在孔洞周围使用钉接胶合板进行强化的方法,评......
Permittivity of composites used for Luneburg lens antennas by drilling holes based on 3-D printing t
Due to the attractive performances such as the ability of beam focus, broadband, multi-beam scanning and other features,......
把多复变量应力函数和边界配点最小二乘法相结合,计算含有任意多个椭圆孔有限大小弹性板的应力场.每个孔的大小、位置为任意.板的边界......
以发动机气缸体缸孔为例,指出了工件表面的微观结构对产品工艺性能的重要意义,以及现用的传统珩磨工艺所存在的局限性,然后对激光造型......
结合低矮房屋的导风研究,对一门式刚架房屋进行了开孔与封闭工况的风洞模型试验,分析了屋面风压的分布规律及开孔对屋面风压分布的......
The class variable source GRS 1915+105 exhibits a wide range of time variabilities on timescales of a few seconds to a f......
大射电望远镜反射面板为三角形薄板,且布置大量网孔.反射面板在正常工作状态下发生非线性变形,故先采用能量变分法给出简支正三角形薄......
从有限元基本原理出发,建立固体中二维有限元模型。对含有孔洞缺陷模型的声波散射进行了数值模拟研究,通过波场快照图能清晰显示孔洞......
用电镜等手段对室温下超塑性变形中的Zn-22%Al共析合金的组织变化进行了观察,发现在该合金的α相(富Al相)+β相(富Zn相)2相组织中,在三叉晶界存在亚微观......
在自然光条件下用普通相机拍摄的电表图像,分辨率较低且变形严重,对于不同表盘其数字大小、字形也不同.针对以上问题,提出了一种八......
人脸区域分割对于人脸信息处理研究有着非常重要的意义,既可以直接用于在图像中寻找人脸,又可以作为眼睛、嘴巴等人脸重要特征检测......
To improve the cooling performance, shape optimization of a laidback fan-shaped film cooling hole was performed. Three g......
结合我厂多年来生产光杆的实践经验,并根据收集到的国内众多有关资料加以归纳总结,详细地阐述了光亮圆铜杆拉伸后表面发黑及断头原因......
采用二维裂纹扩展分析方法研究含孔边角裂纹平板中疲劳裂纹扩展速率和寿命。该方法假设孔边角裂纹两个主方向上裂纹扩展主要取决了......
ACASESTUDYONLONGHOLERAISINGBYSHOOTINGTORELIEFHOLES①DingDexinCentralSouthInstituteofTechnology,Hengyang421001ABSTRACTAcasestu.........
目的:探讨改变树脂表面形态中孔的直径以及分布后其与硅橡胶软衬材料的粘接效果,获取一种增加硅橡胶软衬材料粘接强度的简便可靠的......
混凝土空心砌块作为一种新型的墙体材料在建筑工程中有着较为广泛的用途,利用废弃混凝土生产的再生混凝土空心砌块不仅可以解决建......
在后张预应力混凝土结构中,孔道中的灌浆是防止预应力筋锈蚀的重要防线。目前国内基本都采取压浆法进行孔道灌浆,该法容易造成灌浆......
为了对三角网格模型中的复杂孔洞和曲率变化较剧烈部位处的孔洞进行修补,提出了一种基于粒子群优化算法(PSO)的三角网格孔洞修补算......
为了探讨原木节子及内部缺陷对其力学性能的影响,本文借助应力波理论方法和原木内部节子及孔洞模型及理论分析,并以松木原木为试验......
分析孔心间距现场测量的不同方法,并计算各测量方法的误差,选择最优的测量方案加以推荐....
随着勘探技术的发展及长庆油田油气需求量的增加,鄂尔多斯盆地地震勘探领域不断向复杂的区域(地表岩性复杂多变,地下构造复杂、隐蔽)延......
预应力网架能较好地满足大空间、重荷载结构的要求,但其下弦节点比较难处理。现根据工程实践提出了一种新的节点--开孔焊接空心球节点......
根据Biot波动理论建立了求解饱和土中任意形状孔洞对弹性波散射问题的复变函数方法.首先通过引入位移势函数把稳态条件下的Biot波......
中空玻璃是一种节能、隔音的环保型材料,在建筑领域里被广泛应用,而露点直接关系到中空玻璃的节能性及使用寿命,故此结合中空玻璃的构......
文章采用钢筋混凝土和烟囱设计相关规范的设计假定,结合烟囱设计形式,对带孔洞钢筋混凝土烟囱筒壁的正截面承载力计算公式进行了推......