As warm air rises cool air is drawn in to replace it creating a convectioncurrent.
热空气上升，冷空气补充取代之，就产生了对流气流。
2
As the main flow manner of formation water in deep reservoir, circulated convectioncurrent controlled authigenic mineral location and secondary pore distribution.
循环热对流是深部储层流体的主要流动方式，它控制着自生矿物在砂层中的析出位置和次生孔隙的分布特征。
3
The uncertainties associated with current stellar models lie in the input physics: atomicdata, convection theory, mixing in radiative regions, and mass loss.