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从主动得分效果看雅典奥运会女排三甲现状 被引量:8
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作者 丁世聪 张红松 丁世勇 《西安体育学院学报》 北大核心 2005年第3期88-90,115,共4页
录像统计了2004年奥运会女子排球赛前三名之间的比赛,对各队主动得分状况进行了分析,结果表明古巴队强、快攻强于中国队和俄罗斯队,但中国队灵活的进攻和整体配合成功率高是提升中国队综合实力的优势所在。
关键词 雅典奥运会 女排比赛 主动得分 攻击比较
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Hydraulic Characteristics of Low Crested Structures under Wave Attack
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作者 I.G.B. Siladharma D.M. Sulaiman 《Journal of Shipping and Ocean Engineering》 2011年第3期141-149,共9页
Two-dimensional physical models of low crested breakwaters were tested to establish the effect of water depth, crest width, slope, stone size, core permeability and incident wave characteristics on the wave transforma... Two-dimensional physical models of low crested breakwaters were tested to establish the effect of water depth, crest width, slope, stone size, core permeability and incident wave characteristics on the wave transformation processes. The structure of the breakwaters can be used as coastal protection system by reducing the amount of incoming wave energy. Effect of slope, core permeability, water depth and incident wave characteristics on the stability was also studied. The breakwater model consisted of a core and two armour layers attacked by irregular waves. This paper discusses and compares the test results with the existing design equations. In general, the existing design equations do not seem to predict the wave transmission and reflection accurately for the range of test data. In the range of variable tested, it was observed that the water depth, crest width and wave period have a significant influence on wave transmission process. Further, results show strong influence of the water depth and wave period on the wave reflection process. The structural stability of low crested breakwaters is very much affected by the water depth and wave period. 展开更多
关键词 Low crested structures wave transmission and reflection hydraulic characteristics structure stability.
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