Preface to the English Edition Preface to the Chinese Edition 1 Electrodynamics 1.1 Introduction 1.2 Preliminaries 1.3 Maxwell's Equations in a Vacuum; Lorentz Force 1.4 Electromagnetic Energy and Momentum; Conservation and Transformation Laws of Energy and Momentum 1.5 Mathematical Structure of Maxwell's Equations; Wave Effect of Electromagnetic Fields 1.6 Scalar Potential and Vector Potential of an Electromagnetic Field 1.7 Maxwell's Equations in a Medium 1.8 Electrostatic Fields and Magnetostatic Fields 1.9 Darwin Model Exercises Bibliography 2 Fluid Dynamics 2.1 System of Ideal Fluid Dynamics 2.2 System of Viscous Fluid Dynamics 2.3 Navier-Stokes Equations 2.4 Shock Waves 2.5 System of One-Dimensional Fluid Dynamics in Lagrangian Representation Exercises Bibliography 3 Magnetohydrodynamies 3.1 Plasma 3.2 System of Magnetohydrodynamics 3.3 System of Magnetohydrodynamics When the Conductivity σ Is Infinite 3.4 Mathematical Structure of Magnetohydrodynamics System 3.5 System of One-Dimensional Magnetohydrodynamics ... Exercises Bibliography 4 Reacting Fluid Dynamics 4.1 Introduction 4.2 System of Reacting Fluid Dynamics 4.3 System of One-Dimensional Reacting Fluid Dynamics... Exercises Bibliography 5 Elastic Mechanics 5.1 Introduction 5.2 Description of Deformation; Strain Tensor 5.3 Conservation Laws; Stress Tensor 5.4 Constitutive Equation: Relationship Between Stress and Deformation 5.5 System of Elastodynamics and Its Mathematical Structure . 5.6 Well-Posed Problems of the System of Elastostatics Exercises Bibliography Appendix A Cartesian Tensor A.1 Definition of Tensor A.2 Operations of Tensor A.3 Invariants of the Second-Order Symmetric Tensor A.4 Isotropic Tensor A.5 Differentiation of Tensor Appendix B Overview of Thermodynamics B.1 Objective of the Study of Thermodynamics B.2 The First Law of Thermodynamics; Internal Energy B.3 The Second Law of Thermodynamics; Entropy B.4 Legendre Transform B.5 Thermodynamic Functions B.6 Expressions of Internal Energy and Entropy Index