mechanics of materials 材料力学 材料力学 第六版 (Mechanics of Materials 6ed) Fundations of Solid Mechanics（固体力学基础） Fundamentals of Fracture Mechanics 断裂力学基础 地下管道结构力学(Structural Mechanics of Buried Pipes) 理论力学中的理论与问题 Theory and Problems of Theoretical Mechanics Classical Mechanics-Systems of Particles and Hamiltonian Dynamics，经典力学--粒子系和哈密顿动力学（第二版） API TR 979-2018 Applications of Refractory Lining Materials (FIRST EDITION)