电子显微镜利用一束电子产生高倍放大的影像。
The electron microscope uses a beam of electrons to produce images at high magnifications.
TEMs 的工作原理是通过发射一束电子穿过某种物质，并测量它如何吸收和偏转粒子来建立样本的图像。
TEMs work by firing a beam of electrons through the material and measuring how it absorbs and deflects the particles to build up an image of the sample.
在电子显微镜下，常使用一束电子光而不是普通光线来为标本照明。
In electron microscopes a beam of electrons instead of a beam of light is directed onto the specimen.
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