仔细看了一下,样子蛮像1938年Simens的产品,但型号应该更新一些。
Preserial high-resolution electron microscope (1938) from Siemens and Halske (Ruska E (translated by Mulvey T). The early development of electron lenses and electron microscopy. Stuttgart: Hirzel, 1980.)
handsomeland 发表:去的太晚了,没太仔细看...