以下为句子列表：
英文: Accurately deriving the true liquid flow velocity is the key for determining the stratification flow rate of oil and water and logging interpretation of liquid producing profile.
中文: 摘要准确求取流体的真实流动速度是确定油水各相分层流量及产液剖面测井解释的关键。
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英文: The bionic non-smooth technique was applied to the centrifugal water pump to modify the liquid flow structure in the pump to reduce the hydraulic drag in the liquid-solid interface, resulting in the enhancement of the pump efficiency.
中文: 摘要基于仿生非光滑技术，通过改变离心式水泵中液体的流动结构降低固液界面的阻力，研究了水泵的增效问题。
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英文: The expansion ratio is related to the liquid flow rate, fluidization velocity and free descending velocity of the packing material.
中文: 填料膨胀率的大小与液体流量、填料的流化速度及自由沉降速度有关。
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英文: The two main objectives of theses products are firstly to prevent circuits flattening (thus reduction of thermal transfer (7, 8) or resistance to liquid flow (9, 10)) and secondly to prevent microbial corrosion.
中文: 如果要在系统中使用这种化学品，首先要能防止循环系统的破坏，从而导致热传递速率降低（7，8）或者流速变慢（9，10），其次要能够防止生物腐蚀。
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