骨骼肌肉系统的解剖 anatomy of musculoskeletal system 骨骼肌肉系统的检查方法 examination methods of musculoskeletal system 常见骨骼肌肉系统病的X线表现 Radiograms of musculoskeletal diseases 肿瘤与肿瘤样病变 Bone tumors and tumor-like lesions 其它肿瘤 Other tumors 椎间盘突出 Intervertebral Disc Herniation

1. Any arbitrary input sequence x[n] can be expressed as a linear combination of delaved and advanced unit sample sequences [n]=x[k][n-k] k=-0 2. .Linear Time-Invariant()System A system satisfying both the linearity and the time-invariance property. .If yiln] is the output due to an input xiln] and y2ln] is the output due to an input x2n] then for an input xn]=axiln]+bx2n] the output is given by ]=]+by2[n]

1.传动系 Power Transmission 2.行驶系 Running Gear 3.转向系 Steering System 4.制动系 Brake System

Who might be immuno-compromised or have a weakened immune system? Examples of persons with weakened immune systems include those with AIDS; cancer and transplant patients who are taking certain immunosuppressive drugs; and those with inherited diseases that affect the immune system

1. Thermodynamic System 热力系统 2. Properties of A System 系统的状态参数 3. State and Equilibrium 状态及平衡状态 4. Process and Cycles 过程与循环

Pathologic significance 1) The high degree of localization of function 2) The same pathologic process to manifest clinically in a completely different way when it infects a different part of the system 3) Pathologic responses are usually limited

Digestive System Can you enjoy your life without your digestive system?

Theorem 3.7. (Elementary Transformations). The following opera- tions applied to a linear system yield an equivalent system: ()Interchange: The order of two equations can be changed. (2)Scaling: Multiplying an equation by a nonzero constant. (3)Replacement: An equation can be replaced by the sum of itself and a nonzero multiple of any other equation

1.5 input/output system 1.6 buses and controllers

1.3 What is a processor 1.4 Memory system