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Those will provide basic theory for study regulation of water and sediment movement.
为今后研究河流水沙运动规律提供了理论依据。
youdao
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New Centure, What do the Basic Theory of the Library Science Study?
新世纪，图书馆学基础研究什么?。
youdao
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New Centure, What do the Basic Theory of the Library Science Study?
新世纪，图书馆学基础研究什么?。
youdao