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十亿分之一米到底有多大?对此,哈佛大学的化学家George Whitesides曾经说过,这取决于人们看问题的角度。对于工程技术人员和材料学......

The fatigue damage accumulation of [±20°] laminated steel cord reinforced rubber composite under T-T loading was studi......

On-line estimation of the state of traffic based on data sampled by electronic detectors is important for intelligent tr......

[Objective]To study the pharmacognostic characteristics of Polygonum chinense L.[Method]A research was carried out on th......

The radiation shielding efficiency of material depends upon photon attenuation, exposure buildup factors and neutron rem......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

Traffic modeling is a key step in several intelligent transportation systems(ITS) applications. This paper regards the t......

Background:Many studies suggest that the gamma irradiation decreases allograft strength in a dose-dependent manner.Howev......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

目的 探讨简化大肠癌大体分型的可行性和临床意义.方法 回顾性分析1379例有完整随访记录的大肠癌患者的临床资料,所有患者按照大体......