Learning objectives Understand the importance of good project cost management Explain basic cost management principles, concepts, and terms Describe the resource planning, cost estimating, cost budgeting, and cost control processes
2. 1 Basic Concept 2.2 Determining Degree of Freedom 2, 3 How does a kinematic chains transform into a mechanism? 2.4 Kinematic Diagram of Mechanism 2.5 Principle of Mechanism Constitution
需要—指没有得到某些基本满足的感受状态。 Need is a state of deprivation of some basic satisfaction 欲望—指想得到这些基本满足的具体满足物 的愿望。 Wants are desires for specific satisfiers of needs 需求—指对有能力购买并且愿意购买的某个 具体产品的欲望