Read the knowledge of gas detectors in one article

Semiconductor type :
It is made by using some metal oxide semiconductor materials, and the conductivity changes with the change of the composition of the ambient gas at a certain temperature. For example, an alcohol sensor is prepared by the p.......

Qinling Gold Mine Mining Comprehensive Method Pillar

QINLING gold ore veins 9 genus warmed liquid filling and replacement gold sulphides quartz veins, as veins, lenticular stratoid output, local expansion, contraction and branching complex phenomena, on the strike and dip It .......

What is the significance of geological work in mining?

Geological work refers to the use of geological methods and theories to investigate and study geological bodies.
The development and construction of mines is based on the degree of assurance of mineral resources. The situation of mineral resources is a prerequisite .......

Single rotor hammer crusher principle

Roll crusher via the high-speed collision of the hammer with the material broken material can be used for dry and wet crushing situation, widely used in mining, metallurgy, building materials, ther.......