单词 over-ageing 释义 over-ageing, vbl. n. Metallurgy.Also over-aging.[over- 29 a.]Prolonged artificial ageing of metal so that its hardness begins to decrease.1954Gloss. Terms Iron & Steel (B.S.I.) 21 Overageing.1955Jrnl. Inst. Metals LXXXIII. 529/1 Thi...