A digital twin is a digital model of a real entity, the physical twin (such as an object, a process, or a complex aggregation). It is both a digital shadow reflecting the status/operation of its physical twin and a digital thread recording the evolution of the physical twin over time.

中文翻译：

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数字孪生：连接物理空间和网络空间

数字孪生是真实实体、物理孪生（例如对象、过程或复杂聚合）的数字模型。它既是反映其物理双胞胎状态/操作的数字影子，也是记录物理双胞胎随时间演变的数字线程。