单位元

An integrated CAD/CAM software system developed by the CAD centerof Tsinghua University and some other institutions is presented. The systems con sists of six modules,namely user interface, interactive drafting, product modeling,analysis and optimization, NC Machining, and database management.

基于STEP的集成化CAD／CAM支撑软件系统孙家广，杨长贵（清华大学计算机科学与技术系北京100084）周济（华中理工大学机械学院武汉430074）顾元宪（大连理工大学力学研究所大连116024）摘要本文介绍了由清华大学CAD中心等单位开发的集成化CAD／CAM支撑软件系统。

Jiangnan Securities analyst relatively optimistic about the first division again, he pointed out that as the first aero-engine manufacturing enterprises listed on the future earnings per share compound annual growth rate of 31.24 percent, at the same time as a military unit to enjoy a certain degree of Premium, you can give 30 times PE, for the reasonable value of 15 yuan.

相对江南证券分析师对甲级乐观起来，他指出，作为第一个航空发动机制造业的未来每股收益31.24上市复合年增长率企业，在同一时间为军事单位享有一定程度的溢价，可以给予30倍聚乙烯，为了15元的合理价值。

Johannesburg - Chinese investor Li Quan accused wildlife filmmakers and conservationists John Varty and his brother Dave on Tuesday of allegedly misusing millions of rands of funds meant for their tiger conservation project.

约翰内斯堡讯——中国投资人全莉于周二指责野生动物拍摄者与保护者约翰·瓦提及其兄弟戴夫·瓦提挪用其华南虎保护项目基金，数目达几百万兰特（译者注：兰特是南非和斯威士兰使用的基本货币单位，价值目前略低于人民币，1美元兑换9.8560兰特，1元人民币兑换1.4420兰特。

The argument finds the angle of the 4- vector quaternion from the unit scalar i.e.

辐角函数可找出一4-向量四元数偏离单位纯量(即：1)之角度。

Due to the demand of the large angle attitude control, the unit quaternion is used to describe the spacecraft attitude in this thesis.

针对飞行器以姿控发动机作为姿控执行机构时的大角度姿态运动需求，本文采用单位四元数作为弹体姿态描述，考虑到姿控发动机布局对姿态控制的影响，直接以姿控发动机推力作为系统的控制输入，利用反馈线性化方法，将原非线性系统转化为一个六阶线性子系统和一个一阶内动态子系统。

The orientation-singularity expression of the Stewart platform is deduced by using unit quaternion which can avoid singularity when using Euler angles to represent the orientation of rigid body, and then the algorithm of orientation-workspace of the manipulator at a certain position is proposed.

基于单位四元数描述的刚体姿态，避免了欧拉角等描述刚体姿态的奇异性问题，推导出Stewart机构处于给定位置时的姿态奇异解析表达式，并提出了该机构处于给定位置时的姿态工作空间算法，通过计算机仿真给出该机构处于一给定位置时姿态奇异轨迹和姿态工作空间的三维可视化描述。

Last year, the Nanjing area of land operated average unit land price 1608 yuan per square meter.

去年，南京地区的土地经营的平均单位地价一千六百零八元每平方米。

Based on numerical difference between the first order and high order Mueller matrix solutions, an iterative method for inversion of surface moisture and fraction per unit area of random small spheroids from polarimetric backscattering measurement is developed.

中文摘要：根据一层随机非球形粒子矢量辐射传输方程的一阶与高阶Mueller矩阵解的数值模拟及其差异，提出了在一些参数已知的条件下，用水平与垂直同极化和交叉极化的后向散射测量反演植被覆盖下地表湿度和植被散射元单位面积占空比的迭代方法。

In the unit is administered by the accounts of waste and used materials, funds to personal bank accounts in the name of the establishment of books, crime, when the transfer directly from the book sale and purchase of stocks, warrants, and the amount embezzled 133 million yuan.

在单位冯某是由废料和废旧物资管理，在书籍，犯罪时直接从书买卖股票，认股权证购买转移，挪用金额1.33亿元资金，建立名个人银行帐户。

With compared 2007, average wage added worker of on guard of countrywide town unit 4297 yuan, grow 17.2%.

与2007年相比，全国城镇单位在岗职工平均工资增加了4297元，增长17.2%。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。