This paper analyzes the phenomenon of rebound impact and its negative influence on the present hydraulic breaker. To get......

When the new priest came to the poor parish, there was no house or church for him. A farmer took him in, while the men b......

An electrodeposition method and its experimental device for rehabilitation of cracks in reinforced concrete were propose......

A water bearer had two large pots. One of the pots was perfectly made and never leaked. The other pot had a crack[裂缝] ......

Local flexibility of crack plays an important role in crack identification of structures.Analytical methods on local fle......

Zelongnong Ravine,a branch ravine of Brahmaputra,is an old large glacier debris-flow ravine.Debris-flows with medium and......

摘 要：高效问题的设计是高中英语课堂教学的研究重点。文章以高中英语课堂教学为切入点，阐述了高效问题设计针对学生英语学习具有吸......