透射电子显微镜 ..3/ m 品lte uyMarch 9,1931 1938 Sketch of 1st TEM 1st commercial TEM by Siemens 6 第一台电子显微镜oy Ruska in1930s透射电子显微镜 第一台电子显微镜by Ruska in 1930s March 9, 1931 1938 6 Sketch of 1st TEM 1 st commercial TEM by Siemens