2020-09-27 www kimball直线轰击型电子枪EFG-7 / EGPS-2017 kimball直线轰击型电子枪EFG-7 / EGPS-2017 能量范围:50 eV to 5k eV 束流范围:1 nA to 100 µA 束斑范围:1 mm to 100 mm