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.
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。
For the hot water storage tank to the water temperature stratification, such as the top of the hot water storage tank water use, should reduce the nozzle velocity.
对于需要水箱水温分层的储热水箱，如顶水使用的储热水箱，应降低管口流速。
Objective To explore the relationship between pulse wave velocity(PWV)and blood pressure classification and cardiovascular risk factors stratification in patients with essential hypertension.
目的探讨原发性高血压患者血压分级以及危险因素分层与主动脉脉搏波速度（PWV）的关系。
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