In the region under study, the earthquakes pertaining to this type are most numerous and characterize the state of the deep magma reservoir located at the crust–mantle boundary. The changes in the seismic regime in this part of the magmatic system can be one of the early precursors of ...
This product to provide real-time work video, voice dialogue, personnel positioning, super capacity production, effectively prevent people from entering the danger zone, accident emergency rescue, timely find not mine personnel, under the leadership of the ...