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Encyclopedia
工学
工程中的水文地质问题
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流砂
砂土的流动。通常是细颗粒、粒径均匀、松散、饱和的非黏性土容易发生的一种流动现象。流砂对建(构)筑物的安全和正常使用影响极大。
工学
工程地下水问题
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流砂
含水饱和的松散细、粉砂(也包括一些砂质粉土、黏质粉土)在动水压力作用下产生悬浮流动的现象。
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National Health and Family Planning Commission of the PRC
national health services survey
national health system
national height control network
National Herald
National Heritage Institute
National Higher French Institute of Aeronautics and Space
National Higher Normal School of Nanking
National High Grade Inland Waterway
National High-Level Personnel of Special Support Program
National High Technology Research and Development Program("863"Program) of China
National Historical Association of Japan
National Historical Museum of Brazil
National Historic Atlas of the People’s Republic of China
national history and global history
National History Museum
National History Museum of Seychelles
National History Park: Citadel, Sans Souci, Ramiers
National Hockey Games
National Hockey League
National Housing Act
National Hundred and Thousand and Ten-Thousand Talent Project
National Hydraulic Research Institute of Malaysia
national hydrological database
national identification
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