kie·sel·guhr /ˈkizəlˌgʊr/
矽藻石; 矽藻土
Kie·sel·guhr n. Siliceous earth; diatomaceous earth; specifically, porous infusorial earth, used as an absorbent of nitroglycerin in the manufacture of dynamite.
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kieselguhr
n : a light soil consisting of siliceous diatom remains and
often used as a filtering material [syn: diatomaceous
earth, diatomite]