In many engineering such as oil-gas exploitation, coalbed methane exploitation and extraction, there always occurs gas-liquid two-phase flow through a fracture.
在石油天然气开采、煤层气开发及煤矿瓦斯抽放等工程领域中，都存在着裂缝中气液二相流体渗流的问题。
The content of resveratrol in the extract from liquid of aqueous two-phase extraction could rise up to 34.29%.
双水相萃取时，白藜芦醇的含量远高于有机溶剂萃取，达34.29%。
The content of resveratrol in the extract from liquid of aqueous two-phase extraction could rise up to 34.29%.
双水相萃取时，白藜芦醇的含量远高于有机溶剂萃取，达34.29%。
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