| 单词 | alpha-beta |
| 释义 | > as lemmasalpha-beta alpha-beta adj. Metallurgy designating brass containing about 39–43 per cent of zinc, i.e. intermediate in composition between alpha brass and beta brass; cf. Muntz metal n.Alpha-beta brass is composed of two distinct phases, consisting of alpha brass and beta brass respectively. ΚΠ 1904 Jrnl. Physical Chem. 8 424 Mixed α and β look like Fig. 7.] 1914 H. O. Hofman Metall. Copper iv. 34 Regular Brass... α-β (α-γ) alloys have to be rolled hot. 1946 V. N. Wood Metall. Materials x. 261 Alpha-beta brasses..are of importance because they come within the range where is found the best combinations of strength and ductility. 1963 A. C. Davies Sci. & Pract. Welding (ed. 5) ii. 113 The alpha-beta brass, e.g. 60% copper, 40% zinc, is used for casting purposes. 2006 N. Warren Metal Corrosion Boats (ed. 3) ii. 26 Two distinct types are commonly used, namely the 70/30 and 60/40 types, sometimes called Alpha and Alpha-Beta brasses respectively. < as lemmas |
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