扫描电子显微镜是一种大型精密的电子仪器,借助它可以获得一般光学显微镜不能获得的超微物质精致的形态外貌、结构构造、元素分布等资料。扫描电子显微镜不仅具有分辩能力和放大倍数高的优点,而且还有图象景深大,立体感强、观察视场广、综合分析能力强、自动化程度高、样品制备简单和用量少等多种优点。它是我们探察微观世界的眼睛,是各个领域发展本学科不可缺少的工具。 Scanning electron microscope is a kind of large-scale precision electronic instrument, with which it can obtain the exquisite microscopic appearance, structure structure, elemental distribution and other materials that the general optical microscope can not obtain. Scanning electron microscope not only has the advantages of high resolution and magnification, but also the image depth, strong three-dimensional, wide field of observation, comprehensive analysis ability, high degree of automation, sample preparation and less dosage and other small advantage. It is our eyes to explore the micro-world and is an indispensable tool for the development of this discipline in all fields.