ABSTRACT
This book consists of 50 chapters contributed by 129 authors. This chapter is a general introduction to each chapter of the book. From the second chapter, the concept of digital twinning, architecture description, design specification, and application scenarios are introduced. Section 2 introduces the concept and development of digital twins. Section 3 introduces the key technologies to promote the development of digital twins. Section 4 introduces some general frameworks and construction methods of digital twins. Section 5 introduces the application of digital twins in management and operation. Section 6 introduces the application of digital twins in industry. Section 7 introduces the application of digital twins in building construction. Section 8 introduces the application of digital twins in transportation. Section 9 introduces the application of digital twins in the energy industry. Section 10 introduces the application of digital twins in health and life.
