Decal là ?n ph?m ???c s? d?ng ph? bi?n trên th? tr??ng, h?u h?t các doanh nghi?p l?n ??u s? d?ng.Shroud-The smooth iron casing bordering the electromagnetic lenses on the TEM. Solenoid-An electromagnetic lens fashioned by copper windings which has a immediate present functioning by it.The second anode (Anode 2) accelerates the electrons to the s