Medical instrument of producing pressure gas and working with the gas have be-come indispensable routine devices in hospitals.At present,this kind of instrument
The Three Gorges Project is one of the largest hydro-projects in the world and has drawn many debates inside China and abroad.The major concern is that sediment
The closure of third stage diversion channel for the Three Gorges Dam is characterized by large closure discharge, large drop in water surface, and high gap vel
An understanding of the transport mechanism of gravel-bed rivers is very important for the river management and engineering works. The main objective of this st
This paper deals with the effects of average flow velocity, obstacle length and sediment size on time evolution of scour depth near thin, vertical obstacles, pr
Border crossing in English, as a phenomenon in post-industrialized society, refers to forms of English in one situation are crossing borders into other ones. Th