This paper analyses the density of exercise and the load of sports in the course of PE teaching in Tong Jiaqiao Middle school by applying the information and the method of comparative analysis.
运用文献资料和比较分析等方法，调查分析了重庆童家桥中学教学过程中的体育课练习密度和运动负荷。
A practical system for forecasting urban electric load density is presented based on the land gridding load forecasting method.
本文介绍了一个实用的城市电力负荷密度预测系统。
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