Base on the theory of electromagnetic field and magneto hydrodynamic, an apparatus of double-driving by magnetic force media with permanent magnet has been designed and manufactured.
根据电磁场和磁流体力学理论，设计制造了以永磁体为工作介质，对金属液具有磁力驱动控制作用的双磁力驱动流体流动控制器。
The driving force of piston is ascertained with dynamics analysis, which lays a solid foundation in theory for designing of the whole of machine.
通过动力学的分析，确定了活塞的驱动力，为进一步设计整个机器提供了理论依据。
The relation of bubble nucleation rate and degree of superheat, and phase change driving force and phenomenological coefficient, were analyzed based on phenomenological theory, respectively.
基于唯象理论，分析了汽泡核化速率和过热度以及相变驱动力和唯象系数的关系。
The problem of capillary potential theory is that the hypothesis of pore shapes in soil is far from reality and the type of driving force is not considered all-sidedly.
指出毛管势理论对土壤孔隙形状的概化严重失实，对水驱动力种类考虑的不够全面；土水势理论的问题出现在对理论的过分简化上；
The problem of capillary potential theory is that the hypothesis of pore shapes in soil is far from reality and the type of driving force is not considered all-sidedly.
指出毛管势理论对土壤孔隙形状的概化严重失实，对水驱动力种类考虑的不够全面；土水势理论的问题出现在对理论的过分简化上；
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