Radon is a gaseous substance of radioactive. It exists widely in groundwater and atmosphere: or in pores of soil and rock.
前言：氡是气态的放射性物质，它广泛存在于岩石和土壤的孔隙中、地下水中和空气中。
Atmospheric Marine aerosol was derived from seawater gaseous substance soil dust ash fly from burning coal ash fly from burning fuel and industrial waste at dalian sea area.
结果表明，大连海域大气气溶胶物质主要来自海水、气态物、土壤尘、煤烟尘、燃油灰和工业废料。
A substance having a definite shape and volume; one that is neither liquid nor gaseous.
团体有固定的形状和体积的物质；既不是液态，也不是气态的东西。
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