北京

School of Electrical Engineering , Beijing Jiaotong University ,Beijing 100044, China

北京交通大学电气工程学院，北京 100044

College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China

1中国农业大学信息与电气工程学院，北京100083；2 中国农业大学生物学院，北京 100094

College of Mechanical and Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

北京交通大学机电工程学院，北京100044

The Electrodeposition of Functional Films: Theory And Technique, Press of Beihang University, Beijing, 2005 , p.

朱立群编，功能膜层的电沉积理论与技术，北京航空航天大学出版社，北京，2005，p.37。

In this dissertation, the ion-trapping, fastbeam-ion instability and electron cloud effect in BEPC and BTCF are studied indetail.

本文对北京正负电子对撞机上的离子俘获、北京τ—粲工厂上的离子俘获和快束流-离子不稳定性、BEPC上的电子云效应都作了比较细致的研究。

Beijing University of technology College of Electronic Information and Control Engineering, Beijing 100022, China

北京工业大学电子信息与控制工程学院，北京 100022

College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100022

北京工业大学电子信息与控制工程学院，北京，100022

College of Electronic Information and Control Engineering,Beijing University of Technology,Beijing 100124,China

北京工业大学电子信息与控制工程学院，北京 100124

Institute of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China

北京交通大学电子信息工程学院，北京 100044

Department of Electronic Information and Control Engineering,Beijing University of Technology,Beijing 100124,China

北京工业大学电子信息与控制工程学院，北京 100124

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐