地表火

面火，底火各用一根独立的燃烧棒，利用风机把燃气、空气按适当比例混合后送入燃烧管内。

wetted surface area【科技】

surface pressure

aircraft rotor blade fixed in flight to act as lifting surface

Surface Science

planer (leveller, surface digging machine)

surface adsorption

oil water surface

surface plant