《英文msh词典》Eruption,Volcanic
[入口词] Eruption,Volcanic
[主题词] Volcanic Eruption
[英文释义] The ash,dust,gases,and lava released by volcanic explosion. The gases are volatile matter composed principally of about 90% water vapor,and carbon dioxide,sulfur dioxide,hydrogen,carbon monoxide,and nitrogen. The ash or dust is pyroclastic ejecta and lava is molten extrusive material consisting mainly of magnesium silicate. (From McGraw-Hill Dictionary of Scientific and Technical Terms,4th ed)