natural convection

• 自然对流

natural convection的用法和样例：

例句

1. Rather than use fans to recirculate old air, fresh air will be delivered to every floor through natural buoyancy.
   大厦并不采用风机来循环利用内部空气，而是通过空气自然对流，将新鲜空气流通到每个楼层。