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Microscopy, with 40 times 80 times microscope, adjusted a microscope glass beads dispersed prevail, microscopy data cable is connected to the computer, connected, the computer screen see glass micro bead dispersion rate is uniform, with eccentric standard, Zhengyuan symbol for "V" ellipse symbol for "O" adhesion and impurity symbol "X" mixed mesh into round rate of not less than 80%.
 
Glass micro beads under microscope
glass beads

 
Glass micro beads on a computer display screen
glass beads

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