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09-19
Accelerator is a device that accelerates particles to obtain high energy. In the accelerator, electrons, protons, deuterium, a particles and other heavy ions of various energies can be generated. The interaction between these particles and ···
09-20
X-ray machines can be divided into medical x-ray machines and industrial x-ray machines according to different application fields. Medical x-ray machines are mainly used in hospitals. Industrial x-ray is x-ray flaw detector, which is widely···
09-20
There is only one reason for shrinkage cavity and porosity of die castings, which is the inevitable phase transformation shrinkage when the liquid phase changes to the solid phase after the metal melt is filled. Because the solidification c···