noun🔗Shareアルミナ、酸化アルミニウムAluminum oxide, especially when used in mining, material sciences or ceramics."The ceramic mug is strong and heat-resistant because it's made with a high percentage of alumina. "セラミックマグは、アルミナの含有率が高いため、丈夫で耐熱性があります。materialsubstancechemistryscienceindustryChat with AIVocabulary GamePractice Reading
