Hydrocarbon migrates in the buoyancy-driven flow or the seepage flow through the subsurface porous media, but it moves upward in discontinuous phase in the course of buoyant ascent.
虽然油气的浮力流和渗流都是地下多孔介质中的流动，但油气在水中上浮不呈连续相流动。
The thermocapillary and buoyancy driven flow are included in the solution of momentum equations.
动量方程求解中考虑了热表面张力与浮力联合驱动流。
In summer the natural ventilation rates of buoyancy driven flow decrease, in the meantime the cold start and idle emissions of cars are significantly lower in summer than in winter.
在夏季，自然通风量减小，但汽车在冷启动与怠速情况下的污染物排放量远比冬季的小。
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