In addition, mute oil free compressor USES air convection principle, to achieve the natural cooling effect.
另外，静音无油空压机采用空气对流原理，达到自然冷却效果。
2
Under certain conditions, the vertical density difference may induce freeconvection of the fluids.
在一定的条件下，该密度差可导致流体产生自由对流。
3
The experimental results indicate that freeconvection caused by the buoyancy in the heated tube with natural circulation has great influence on the heat transfer characteristics.