第二部分牛顿运动定律 第一讲牛顿三定律 一、牛顿第一定律 1、定律。惯性的量度 2、观念意义,突破“初态困惑” 二、牛顿第二定律 1、定律 2、理解要点 a、矢量性 b、独立作用性:f→a,Fx→a c、瞬时性。合力可突变,故加速度可突变与之对比:速度和位移不可突变);牛顿第二定律展示了加速度的决定式(加速度的定义式仅仅展示了加速度的“测量手段”)

2、动载系数Kv 2..2 3~10为第公差组精度等级 2.( 10 1 1.6 1. 1.2 主共振区 1.0 2 4 6 8 10121116 v·Z1/100(m/s) (a)用于直齿轮

1. RGB 和 HSV 2. HLS/HSB 和 RGB 3. HSI 和 RGB 4. CIE XYZ 和 CIELAB 5. CIE XYZ 和 RGB

2.1 该用什么颜色空间 2.2 计算机图形颜色空间

1. Compare Stearns' Type 2 fracture pattern to the okljoints from the class notes. Draw a diagram and discuss the nature and occurrence of the fracture(s)

1. Compare Stearns'Type 1 fracture pattern to the okl and the hko joints from the cla notes and from the text. Draw a diagram and discuss the nature and occurrence of the fracture(s)

三、标准齿轮传动的中心距 (a) (b) 1、保证两轮的顶隙c为标准值 2、保证两轮的侧隙为零

18-1一些概念 18-2沉淀分离法 18-3溶剂萃取分离法 18-4离子交换分离法 18-5其它分离方法

September 1, 2000 1. The following map shows the principal azimuths for fractures measured on the Brokenback feature in Wyoming. Interpret the fracture pattern using your knowledge of joints and joint systems Prepare a written (1 paragraph)analysis

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