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Contactless measurement of wind flow has been utilized in many fields,such as weather forecasting,hurricane tracking,and......
Fifty-six samples of nannofossil ooze were col-lected from Core PC5794 in the northern equatorial Pacificat 5 cm interv......
A refined k ε model re considering the fluctuating pressure diffusion term in the dissipation rate equation (ε......
We report the current-voltage (I-V) characteristics of individual polypyrrole nanotubes and poly(3,4-ethylenedioxythioph......
For technological reasons many high-performance solid rocket motors are made from segmented propellant grains with non-u......
Sumitomo Metal Ind.is the third place steelmaking company for productivity in Japan.Although,we have some first Japanese......
Superconductivity and influence of the interface on the normal-state resistance of ultrathin YBa_2Cu
The high-T_C oxide superconductors are of high ainsotropy due to their layeredcrystalline structure.For example,the ani......
Microstructural analysis of a subhorizontal gold-quartz vein deposit at Donalda,Abitibi greenstone b
The Donalda gold deposit in the southern part of the Archean Abitibi greenstone belt consists mainly of a subhonzontal g......
The microstructures and properties of X60 grade pipeline strip steel were researched.With Nb microalloying and TMCP,the ......
Instrumented borehole drilling for interface identification in intricate weathered granite ground en
The successful application in drilling for HK simple weathered granite foundation has revealed its further use in instru......
以MMC的动态模型为出发点,分析了子模块电压波动与MMC交流侧频率、交流侧输出电流幅值关系,提出了一种低频工况下MMC电容电压波动......
本文采用二维激光流速仪(2D-LDA)在玻璃水槽中实测了光滑和加糙壁面上清水的湍流结构和时均结构。通过试验观测并结合其它学者的资......
本文报道作者1983年在市郊嘉定县采集迁入甜椒田黄色水盘中的有翘蚜,已鉴定的有4科20属33种,标本存于植保系。在甜椒生育期间,迁入......
固体激光器的脉冲稳定性限制了激光器在很多方面的应用。从被动锁模Cr^4＋：YAG激光器腔内脉冲的传播方程出发，得到了带噪声的非线性Sch......
为减少无轴承同步磁阻电动机的传感器成本，提高其实用性，提出了一种基于高频注入法的无径向位移自检测方法。通过在无轴承同步磁阻电......
目前针对电网故障的研究,主要集中在对称故障方面,研究的是不对称故障中的小值电网电压不平衡时风电机组的故障穿越技术.在传统电......
提出一种变等效转动惯量飞轮的设计方法。将微型飞轮安装在与往复式压缩机曲轴保持变速比的固定轴上，通过非圆齿轮传动实现轴与曲轴......
利用非线性分析技术中的分形理论在较宽的流速范围内对水平管空气-水段塞流中的液塞速度波动特性进行了研究.结果表明,水平管道段......
本文首次提出了水流移床力和河道运动力学的概念，并建立了水流移床力与流量脉动强度的关系。水流挟沙力是水流带泥沙通过河道的能力......
在渤海的3个典型站位B1、E5和E1，以3个不同采样时期的沉积物样品（1997年6月、1998年9-10月份和1999年4-5月份），研究了渤海自由生活海洋......
This paper is concerned with the dynamics of the steady state of a two-delayed nonlinear system of functional differenti......
根据耗散结构形成和维持的三个条件，从宏观和微观两个方面研究了岩体变形系统的非线性系统，岩体失稳过程中所处的远离平衡态的情况与......
文中在10 a际尺度上详细分析了中国干湿气候界线波动与气候的干湿变化,得出:过去50 a中国干湿气候界线波动显著,区域差异大,呈现出......
从系统科学的角度提出了建筑结构的系统理念．并分析了结构体系的构成元素、系统环境、功能以及约束机制；从动态发展的观点出发．探析了......
