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1·The subrogation of primaries will not bring serious velocity fluctuation if the design is appropriate.

设计合理时初级的更替不会造成速度严重波动；

2·The dynamical basis of vortex motion solution is the set of equations of turbulent velocity fluctuation.

求涡旋运动解的动力学的基础是湍流速度涨落方程。

3·The correlations between the scalar fluctuation and the velocity fluctuations for the local equilibrium turbulence are discussed.

讨论了局部平衡湍流的标量脉动与速度脉动相关。

4·Using these formulas and a 1-d LDA, mean square value of 2-d turbulent velocity fluctuation and Reynolds shear stress have been measured for water flow in a square duct.

用这些公式和一台一维激光多普勒测速计，测量了方形管道中水流的二维湍流速度脉动的均方值和雷诺切应力。

5·In the power spectrum of the streamwise velocity fluctuation, the power intensity at low frequencies was larger and the power intensity at high frequencies was smaller than that for water.

在主流速度脉动能谱中，低频运动强度大于水流，而高频运动强度低于水流。

6·In addition, the height, density and perpendicularity of remnant stubble, straws and grass had influence on aerodynamic roughness and wind velocity fluctuation on different underlying surfaces.

此外，作物残茬、秸秆和牧草等粗糙元的高度、密度及直立性均对下垫面的空气动力学粗糙度、摩阻速度及风速脉动有一定影响。

7·Sometimes temporal fluctuation may take place in the local velocity.

有时，在局部速度中可能出现瞬时脉动。

8·This paper mainly focuses on the fluctuation of velocity and torque of the electromotor because of the variational load in the pumping unit equipment.

摘要抽油机中载荷变化大，易引起电动机转速和转矩的波动。

9·When the mixture velocity accelerates, the chaotic extent of fluctuations increases, and the fluctuation is sensitive to the initial conditions.

气液相混合速度增加，液塞速度波动的混沌程度增大，并且液塞速度波动对初始条件的敏感程度越强。

10·The effects of fluidization number, injection velocity, particle mean diameter and static bed height on jet fluctuation are discussed.

研究了流化数、射流初始速度、颗粒平均粒径及静态床层高度对射流脉动特性的影响。