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河流解冻
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河流解冻
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ice break-up of river
河流解冻
气温上升至0℃以上时,封冻河段在热力和水力作用下冰盖融化和鼓裂,在较长的河段内已没有固定的冰盖,且敞露水面上下游贯通,其面积超过河段总面积20%的现象。又称开河。
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syrups
syssemantograph
syssemantographic and picto-phonetic character
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system A and system B
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system analysis for water conservancy planning
system analysis of water resources
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Systematic Administrative Organization Theory
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systematic analysis of organic pollutants
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