以下为句子列表：
英文: The prepared SiO2 sols, polyelectrolyte/SiO2 composite films and SiO2 thin films are investigated with transmission electron microscope, fourier transform infrared spectrophotometer and 721 spectrophotometer.
中文: 采用透射电镜、红外光谱仪、721分光光度计对二氧化矽溶胶和薄膜进行了分析。
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英文: The stones were analyzed with infrared spectrophotometer or scanning electron microscopy.
中文: 结石之分析是采用红外线分光仪及扫描电子显微镜。
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