我室H一300电镜已使用十多年，现将部分故障及对策叙述如F，洪问行参考。l电子光路污染故障现象：在换灯丝后使用15天左右，出现光斑抖动，即使轻拍一厂视台面或用脚轻踏地下，光斑就出现不停抖动。在静止情况F，光班仍会无规则的抖动，特别是在光斑缩小时抖动更严重，但若将光 I H-300 electron microscope room has been used for more than 10 years, and now part of the failure and countermeasures described as F, Hong asked for reference. l Electronic light path pollution Fault phenomenon: After changing the filament for about 15 days, the spot appears jitter, even if patted a plant as a tabletop or lightly touch the ground with the foot, the spot appears jitter. In quiescent conditions F, there will still be no irregular jitter in the light classes, especially when the light spots shrink, but if light