Convection is like a buoyant bubble , he said .

他说，对流就像一个浮着的泡泡。

We compare it to a convection oven .

我们把它比作对流加热烤箱。

This convection steamer makes filling for the pastry .

这个对流式蒸汽箱制作面包的内馅儿。

A hurricane forms when intense sunlight heats the surface of the sea , driving both evaporation and convection .

强烈的太阳光线使得海表面升温，加强水分的蒸发过程和空气对流从而形成飓风。

The vacuum stopped the apparatus losing heat by convection .

容器防止该设备通过对流失去热量。