创造旋度一词为了有助于描述运动流体的性质。
The curl was invented to help describe the properties of moving fluids.
根据气泡的尺寸划分气相，采用时间平均法建立了描述垂直管道内层流泡状流运动的多流体模型。
A more detailed multi fluid model was developed with the gas phase divided into several groups according to bubble size to describe bubbly flow in a vertical pipe.
通过求解bbo方程，给出了描述水力旋流器内固体颗粒与流体介质相对运动的跟随性指标。
By resolving BBO equation, some parameters describing the lags between particles and medium was derived and analyzed.
不同尺寸气泡的运动和受力不同。当气泡尺寸分布范围较大时，不宜采用双流体模型描述泡状流。
The commonly used two fluid models are not suitable for bubbly flow with non uniform bubble sizes.
对于描述流体运动的基本方程n - s方程，现已开发出了多种不同的数值求解方法。
Nowadays, many different numerical methods have been developed to solve the N-S equation.
对于描述流体运动的基本方程n - s方程，现已开发出了多种不同的数值求解方法。
Nowadays, many different numerical methods have been developed to solve the N-S equation.
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