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......

The toughness of blends composed of nylon 6 and acrylonitrile-butadiene-styrene(ABS)compatibilized by using styrene-male......

高速进行中的破有坏,受到横波超声波作用时,在破断面上形成 Wallner线.由 Wallner 线的间隔可求得破坏速度,本文概要介绍了用超声......

本文研究了不同拉伸速率下的聚苯乙烯PS断面形貌特征及分布。结果表明:微坑形貌,平坦无特征区,剥离花样和岩石层状形貌是PS拉伸断......

The effects of pre-stress and bending angle on the flex fatigue lifetimes of para- aramds have been studied choosing the......