有两种坐标系,一种是世界坐标系(Wc: world coordinate system),这种较常用;另一种是用户坐 标系(UCS),这种常用于较复杂的图形。 坐标:动态与静态,默认为动态直角坐标。F6或 Ctrl+D可切换。状态栏右击:利用快捷菜单可选择显 示方式

Outline Review u Examined basics of GPS signal structure and how gnal is tracked a Looked at methods used to acquire satellites and start g Today we look at

组织相容性抗原(histocompatibility antigen): 通过移植鉴定与组织相容性有关的抗原。 主要组织相容性抗原系统(major histocompatibility antigen system, MHS): 能引起较强移植排斥反应的抗原

Class expectations This is a graduate level class. There is no final exam Grading in the class is based on homework (75%) and on a final written report(25%) The report will be revised during semester and should be 2000-3000 words(8-10 double spaced pages)

一 、SA系统简介 SA是Statistical Analysis System”的缩写,是一个用来管理分析数据和编写报告 的组合软件系统。其基本部分是SAS/BASE软件。1966年,美国 North Carolina州立大学 开始开发SAS统计软件包,1976年该系统完成同时成立SAS研究所

1 Intellectual property The Dutch legal system of intellectual property rights is highly determined by European legis lative initiatives. Both the European Directive on software protection and the European Directive on Data base protection have been implemented into Dutch law. This implied a Iment of the Copyright Law as well as the introduction of sui generis law on the protection for those databases that do not meet the requirement of under the Dutch Copyright

1.基本概念 数字控制(NC) 数控系统( NC System) 数控装置(NCU) 计算机数控(CNC)

Unfortunately, everyone had forgotten why the branch came off the top of the main and nobody realized that this was important

第一节 环境 环境系统 环境问题 The environment,environmental system and environmental problems 第二节 地球科学Geosciences 第三节环境地学与环境科学 Environmental sciences and environmental geosciences

The zeroth law of thermodynamics: The expression of the fundamental experiment fact. The first law of thermodynamics: The a statement of conservation of energy for pure thermodynamic system. The second law of thermodynamics: Why we need the second law of thermodynamics?