geo·chem·is·try /ˌʤioˈkɛməstri/
地球化學
ge·o·chem·is·try n. The study of the chemical composition of, and of actual or possible chemical changes in, the crust of the earth. -- Ge*o*chem*ic*al a. -- Ge*o*chem*ist n.
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geochemistry
n : the chemistry of the earth's crust