After replacing the air plate, 16 consecutive rounds of online data show that the polycrystalline appearance is normal and there is no abnormality of residual particles
After the replacement of the air disk, 16 consecutive rounds of online data show that the polycrystalline surface is normal, there is no abnormality of residual particles.
After the replacement of the gas disk, the on-line data of 16 consecutive rounds showed that the polycrystalline appearance was normal, and there was no abnormal residual particles