The 4-level pulse amplitude modulation (PAM4) based on an 23 GHz ultrabroadband directly modulated laser (DML) was propo......

The elasto-plastic stress/strain behavior of an automobile rear axle was analyzed by three-dimension finite element meth......

【摘 要】需求和技术的发展过程是处在不断改变的过程中，客户的需求和相应的产品进行的创新改变是互相推动的。一方面，客户的需求是......