单词 | pozzuolana |
释义 | Word Frequency pozzuolana(ˌpɒtswəˈlɑːnə) or pozzolana (ˌpɒtsəˈlɑːnə) noun German name: puzzolana1. a type of porous volcanic ash used in making hydraulic cements 2. any of various artificial substitutes for this ash used in cements Word origin C18: from Italian: of Pozzuoli |
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