In order to investigate water and chloride ion transport in damaged concrete, three types of concrete were prepared, fre......

For describing and resolving the process of chromium ore smelting reduction in a converter preferably,the coupling dynam......

The momentum of strong backward flowing melt jet and the thermal action from transferred droplets are two dominating fac......

用描述函数法分析了步进电机跟踪控制的速度饱和非线性特性,研究表明：随着步进电机旋转激励磁场的幅值或频率的增大,电机输出将逐渐......

本文介绍了间隙非线性对舵面小幅值频率特性的影响研究。基于描述函数法分析了间隙非线性的一次谐波频率特性,利用Simulink建立带......

【正】 In a living statue, just as the name implies, somebody transforms him self or herself into a statue. Last year, I......