The most important feature of the digital twin is that it is a dynamic simulation of a solid object that "moves". The basis for the "movement" comes from the physical design model of the object, the data received from the sensors above the object, and the historical data of the object's operation. The real-time state of the body, as well as the external environmental conditions, will be reproduced in the "twin". In addition to "moving", the digital twin has three characteristics: "full lifecycle", "real-time", "two-way". The digital twin is characterized by three features: "full life cycle", "real time", and "two-way".

・Accuracy: Combining historical and real-time data (sensing);
・Knowledge transfer: incorporating human knowledge and experience;
・Real-time: combining theoretical models and actual characteristics, taking into account correlated data such as environmental changes and equipment aging;
・Multi-dimensional: Integration of different analysis systems;
・Full life cycle: through feasibility study, design, construction, operation and maintenance, and end-of-life.