攔河堰下游軟弱岩石沖刷坑形狀與深度分析

攔河堰下游軟弱岩石沖刷坑形狀與深度分析

165 Pages · 2011 · 17.21 MB · Chinese
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“ Be grateful for whoever comes, because each has been sent as a guide from beyond. ” ― Rumi
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