目的:观察Q-开关Nd:YAG激光治疗外源性皮肤色素性病变的临床效果.方法:用Q-开关Nd:YAG激光1 064nm波长治疗黑色、灰色或蓝色皮肤色......

从简化的一维双区平板反应堆问题入手,专门对松散耦合反应堆系统的基本物理特性进行了研究。结果表明,一个由多区燃料组成的反应堆......

In order to study the effect of initial load on the mechanical properties of concrete beam strengthened with extraneous ......

An effective controller and compensator is designed by using the system identification and constant structure theory to ......