Chapter 1 Introduction 1.1 Preliminary Remarks When you think about it, almost everything on this planet either is a fluid or moves within or near a fluid. -Frank M. White What is a fluid?

When is a flow compressible? compressible flow differs from an incompressible one in that significant change happens in the density

Boundary layer(边界层) Although frictional effects in slightly viscous fluid are indeed present, they are confined to a thin layer near the surface of the body, and the rest of the flow can be considered inviscid. (1904, Prandt/)

Properties of Pressure Vertical to the surface and point into it. At any point, pressure is independent of orientation

一、1高斯消元法lGaussian Elimination*1 高斯消元法:

§1 误差的背景介绍 /* Introduction */ §2 误差与有效数字 /* Error and Significant Digits */ §3 函数的误差估计 /*Error Estimation for Functions*/ §4 几点注意事项 /* Remarks */

§1 多项式基础 /* Polynomials */ （自习） §2 二分法 /* Bisection Method */ §3 迭代法 /* Fixed-Point Iteration */

Outline 6.1 Forces Influencing protein structure 6.2 Role of the amino acid sequence in Protein structure 6.3 Secondary structure of proteins 6.4 Protein Folding and tertiary structure 6.5 Subunit Interactions and Quaternary Structure

Outline 11.1 Nitrogenous Bases 11. The pentoses of nucleotides and na 11.3 Nucleosides are Formed by joining a Nitrogenous Base to a Sugar 11.4 Nucleotides -Nucleoside Phosphates 11.5 Nucleic Acids are Polynucleotides 11.6 Classes of nucleic acids 11.7 Hydrolysis of Nucleic acids

11.1的衡类和平衡方法 11.2刚性转子的平衡设计 11.3刚性转子的平衡试验 11.4挠性转子平衡简介 11.5平面机构的平衡设计