中学生主动学习英语培养策略

中学阶段是学习英语的黄金时期，学生们正处于成长时期，从心理上看他们求知欲强好胜心切；从生理上看他们精力旺盛，记忆力好，反应敏捷。因此中学英语教师应充分利用这一有效时期，加强对学生英语基础知识的培训和听说读写能力的培养，为他们今后语言的进一步学习和应用打下坚实的基础。从教学的实效角度来说惟有保证学生学有所乐，学有所得，才能达到这一目标。因此，培养中学生主动学习是语言教学的首要任务。     

The Application of Ridge Regression in Dynamic Balancing of Flexible Rotors Based on Influence Coefficient Method

Introduction The influence coefficient method applied in thedynamic balancing of rotors is based on the experi-ence that the rotor's vibration amplitude is propor-tional to the unbalancing masses of the rotor with-in the range of practical interest under the assump-tion of linearity of both the machine and measuringsystem.According to the influence coefficient con-ception in mechanics,the influence coefficient ismeasured at a specific location,unite trial weightplaced in some known position in…