单词 | kernite |
释义 | Word Frequency kernite(ˈkɜːnaɪt) noun a light soft colourless or white mineral consisting of a hydrated sodium borate in monoclinic crystalline form: an important source of borax and other boron compounds. Formula: Na2B4O7.4H2O Word origin C20: from Kern County, California, where it was found + -ite1 |
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