Understanding the coupling relationship between ecosystem services and poverty livelihoods is a prerequisite for poverty......

本文在综述交通运输与经济发展理论基础上,提出交通运输与经济发展的耦合关系,对交通经济耦合的含义、耦合机理进行了分析,并应用......

Based on flexure hinge and piezoelectric actuator of two-axis fast steering mirror is a complex system with time varying......