
On Direct Theorems of Best Approximation by Polynomials in Bergman Spaces 

Xing Fuchong(Department of Mathematics,Central University for Nationalities, Beijing 100081 ) 

L￣p Boundedness of a Kind of Multi Pseudo Differential Operators 

Zhang Chengguo(Department of Mathematics, Central University for Nationalities, Beijing 100081) 

An Inequality of Two Weighted Norms for Fractional Integral Operators on spaces of Homogeneous Type 

Gao Rui(Department of Mathematics and Mechanics, Beijing University of science and Technology, Beijing 100083) 

Generalized Nil Radical of Module 

Hu Xianhui (Department of Mathematics, Central Universiey for Nationalities, Beijing 100081 ) 

Design of a Multilingual (Korean, Chinese, English) office Automation System 

Gao Xikui (Department Of Computer Science, Central University for Nationalities, Beijing 100081 ) 

Crystal Growth of PbTiO_3 

Xu Xiaozhen (Department of physics, Central University for Nationalities, Beijing 100081 ) 

Application of a Laser Michelson Interferometer with One Mirror Vibrating 

Zhu Zhenhe (Department of Physics, Central University for Nationalities, Beijing 100081 ) 

Influence of Some Experimental Parameters on Gas Temperature in Cold Plasma 

Guo Shujing; Li Heli (Department of Physics, Central University for Nationalities, Beijing 100081 ) 

Experimental Study on the Treatment of Wastewater Containing F with the Method of Precipitation by Calcium Salt 

Zhu Guilian (Beijing Kinescopy Factory, Beijing 100061 )Li Wei (Department of Biology and Chemistry,Central University for Nationalities, Beijing 100081) 

Relationship between Inadequate Phonation and Disordered Voice of Teachers 

Yu Hua (Hospital of the Central University for Nationalities, Beijing 100081) 

On Feasibility of Economic Prosperity with Aid of Science and Technology in Aluke′erqin County 

Man Da; Hu Fuming (Physics Department,Central University for Nationalities, Beijing 100081 ) 

Some Typical Methods in the Theory of Real Functions 

Zheng Gengxin (Department of Mathematics, Central University for Nationalities, Beijing 100081 ) 

Five Equivalent Definitions of Greatest Common Divisor 

Luo Xiaowei (Department of Mathematics, Central University for Nationalities, Beijing 100081 ) 

Notes on Rotational Inertia Tensor 

Yu Chen (Scientific Research Office, Central University for Nationalities, Beijing 100081 ) 

Work and Energy in Steady State of Forced Vibration 

Tang Qichuan (Department of Physics, Central University for Nationalities, Beijing 100081) 

Notes on Hybrid Orbitals 

Chuai Suqing (Preparatory Section, Central University for Nationalities, Beijing 100081 ) 

Volume of Revolution Solid Formed by a Curved Sector Revolving around the Polar Axis in Polar Coordinates 

Li Ji (Preparatory Section,Central University for Nationalities,Beijing 100081 ) 