electron microscope

例句：

1. 1. The electron microscope is used toobserve the structure of materials at a verysmall scale.
   电子显微镜用于观察材料在非常小尺度的结构。
2. 2. The electron microscope has revolutionized the field of microbiology.
   电子显微镜已经彻底改变了微生物学领域。
3. 3. The electronmicroscope is essential for studying the microscopic world around us.
   电子显微镜对于研究我们周围微观世界至关重要。