Classroom English teaching is a touch of art. Only when teachers focus on harmony in emotional dimension, cognitive dimension and developmental dimension during
Peak oil theory is a theory concerning long-term oil reserves and the rate of oil production.Peak oil refers to the maximum rate of the production of oil or gas
Extended reach wells (ERWs), especially horizontal extended reach well with a high HD (horizontal displacement) to TVD (true vertical depth) ratio, represent a
The Fankou Pb-Zn deposit is a very important and famous deposit in China. The time of Pb-Zn enrichment has been debated for a long time in this deposit. A total