A small pump with an extended suction duct that is designed to pump fluid from barrels.
一种带延伸的吸入导管的小泵，用来从桶中泵出流体。
The results suggest that the effects of buoyancy force, variable physical properties of the fluid, and duct geometric characteristic on flow and heat transfer can be very significant.
研究表明，流体剧烈变化的热物性、浮升力以及三角管的几何特征对管内流动换热的影响非常明显。
Conclusion: the components in rete testis fluid can regulate the EGFR expression and structure of epididymal duct in initial segment and corpus through different mechanism.
结论：睾丸网液的成分通过不同作用机制影响附睾起始部和体部的结构和EGFR的表达。
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