The rate of temperature rise by the ultrasound treatment is the same as before, but at the same time, the temperature of material dealt is higher than the material undealt. 6. 超声处理前后温度上升率相同,但在同一时刻点上,处理的材料比未处理材料的温度高。
Gannan region is a famous area of tungsten mineral production in China and even the world. With the continuous process of exploration, we will face increasing problems such as the expansion of undealt mined-out area and rudimental mine props. 赣南是中国乃至世界著名的黑钨矿产地,随开采活动的不断进行,将相继面临着未处理采空区不断增加、残留矿柱日益增多的问题。