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单词 CIPW classification
释义 CIPW classification
[¦sē¦ī¦pē¦dǝb·ǝl·yü ´klas·ǝ·fǝ`kā·shǝn]
PETROLOGY
A designation for the Norm system of classifying igneous rocks; from the initial letters of the names of those who devised it: Cross, Iddings, Pirsson, and Washington.
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