PURPOSE: the moisture submodel of moisture submodel teaching material and link method, which provides the molecular model of methane hydrate, allows student's learning molecule model accurate. ;CONSTITUTION: oxygen atom model, which includes oxygen model, has certain interval in four direction protruding portion outstanding. Hydrogen atom model includes two hydrogenic models, these wave heaves project in opposite directions. Two covalent key units symmetrically connect two hydrogen atom models and are based on oxygen atom model. ;The 2011 of copyright KIPO submissions
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