Archive of electrical studies of the Department of Electrical Illumination and Light Signalling

<p>The dataset contains issues of studies (declarations, technical descriptions and specifications, etc.) of the Department of Electrical Illumination and Light Signalling.</p>本数据集收录了电气照明与光信号部（Department of Electrical Illumination and Light Signalling）的各类研究相关文件，涵盖申报书、技术说明与技术规范等内容。