“alumina balls”的概念、定义、翻译、参考文献-科学参考

单词	alumina balls
释义	alumina balls [ǝ`lüm·ǝ·nǝ ´bȯlz] ^MATERIALS Alumina in the form of balls ¹/₄ to ³/₄ inch (6.4 to 19 millimeters) in diameter; usually composed of 99% alumina and having high resistance to chemicals and heat; used in reactor and catalytic beds.
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