The agglomeration of the charged dust particle is investigated by the method of electric-fluid mechanics and the transport theory of external force field.

应用电流体力学和外力场输运理论，分析了电收尘器中带电粉尘粒子的凝并现象。

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The drift move of field has generality: Any eddy field may have a drift move of field in the nature when the external force acts.

场的漂移运动可以作一般性推广：自然界中在外力作用下任意涡旋场可以产生场的漂移运动。

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The damping force and the external electric field caused the kink soliton excitation in a hydrogen bonded chain with asymmetric double well potentials.

阻尼和外电场的作用使得带有非对称双阱势的氢键链存在扭结孤子激发。

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The coil is suspended in an external magnetic field and the current running through it adjusted so that the attraction between the two magnets balances the gravitational force on the suspended mass.

ECONOMIST: Weighing a kilogram