– Th? Hello?n s? chuyên nghi?p c?a nhà s?n xu?t trong khâu ti?p th? s?n ph?m.Shroud-The gentle iron casing bordering the electromagnetic lenses from the TEM. Solenoid-An electromagnetic lens fashioned by copper windings with a immediate existing operating by it.The photographs enable researchers to look at samples on the molecular amount, whic