... flow fluctuation 流量波动 speed fluctuation 速度变动,转速波动... turbulent fluctuation 紊动,紊流脉动...
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通常双缸单作用活塞泵的恒转速运行会导致管路流量波动，使之在恒流量场合较少应用。
In general, a double cylinder single acting piston pumps rotates at a constant speed, this results in considerable fluctuation in the flow curve.
目前使用的静态水力旋流除砂器效率低并且油田现场流量波动较大对分离效率有较大的影响。
Static hydrocyclone being used now in oil field is inefficiency and fluctuation of oil flow also affects its efficiency.
无论是单端供气还是双端供气，热壁面引起的管道流量波动幅度都要远大于绝热壁面的情况，最大波动幅度达2.16%。
The fluctuating amplitude of mass flow rates of branch pipeline outlets with hot wall boundary is bigger than that with adiabatic wall boundary, and the maximal fluctuating amplitude goes up to 2.16%.
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