Ei Compendex是世界上涵盖面最广最完整的工程文献数据库，收录约~26.1M条文献记录，并正在持续增长， 1884年至1969年收录>1.78M条记录来自Ei Backfile。1970年至今，每年增加 1.3M条记录，通过DOIs实现全文链接，涵盖190个工程相关领域，来自78个国家的2,291个出版社。
其次，Ei Compendex涵盖多样化的内容：
Artificial Intelligence (人工智能) Intelligence demonstrated by machines
Neural Networks (神经网络) Computing systems inspired by biological neural networks
Industry 4.0 (工业4.0) The current trend of automation and data exchange in manufacturing technologies
Corrosion (腐蚀) The gradual destruction of materials by chemical and/or electrochemical reaction with their environment
Biomechanics (生物力学) The study of the structure and function of the mechanical aspects of biological systems using the methods of mechanics
3D Printing (3D打印) Creation of a three-dimensional object by joining/solidifying materials under computer control
Optical Waveguides (光波导) The key elements of photonic devices to process optical signals.
Steel (钢铁) A major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons.
Secondary Batteries (二级电池) A type of electrical battery which can be recharged many times after use
Nanotechnology (纳米技术) Molecular motors: nature's nanomachines
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