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基础生物化学课堂教学进程规律化设计 被引量:3
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作者 李胜发 《卫生职业教育》 2009年第15期42-43,共2页
基础生物化学难教、难学是医学卫生类院校师生的普遍性认识。如果任课教师将基础生物化学教学内容进行横向对比归纳,总结出每个教学内容要点,并将要点按一定的顺序来组织课堂教学,使课堂教学进程规律化、格式化,则有助于增强教学效果。
关键词 生物 课堂教学 规律化设计
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New Design Method for Engine Cooling Fan
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作者 黄虹宾 郑世琴 +1 位作者 刘淑艳 阎为革 《Journal of Beijing Institute of Technology》 EI CAS 1998年第4期359-365,共7页
Aim To put forward a type of math model for optimizing fan′s twisting law.Methods This math model wu based on turbo-machinery Euler equations and calculus of variation, it was conducted for optimizing the aerodynamic... Aim To put forward a type of math model for optimizing fan′s twisting law.Methods This math model wu based on turbo-machinery Euler equations and calculus of variation, it was conducted for optimizing the aerodynamic parameters along the blade height of the fan, and the math method was produced for the optimization of fan's twisting law. Results The type 6102Q engine cooling fan was optimized by use of this model, and the calculation on data were contrasted with those of iso-reaction coefficiency flow type and free vortex flow type. Some probleme existing in long blade can be solved by use of above method. Conclusion The design parameters needn't be determined artificially, so calculating results are more rational to a high degree than that from other mehods. 展开更多
关键词 cooling fan twisting law optimum design
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