目的了解深圳市一般人群和相关管理人员、政策制订者对生殖道感染(RTI)及其预防控制的认识和看法,以及一般人群RTI的知识水平、性......

This paper discussed the historical review and current status of tidal current energy,problems,and challenges in this en......

A developing country like Rwanda heavily </span><span style="font-family:Verdana;">is </span><span style="font-family:Ve......