| 单词 | button metal |
| 释义 | > as lemmasbutton metal ΚΠ 1786 Whitehall Evening-post 31 Jan.–2 Feb. The shop of Mr. Phipson..was broke into, and robbed of 300 weight of button metal, a cake of silver, and other articles. 1881 A. Watt Mech. Industries Explained 90 Button brass..of the Birmingham manufacture, is composed of 8 parts of brass and 5 parts of zinc, while their cheaper button metal is composed of copper, tin, zinc, and lead. 1884 C. G. W. Lock Workshop Receipts 3rd ser. 14 Cu+4Zn White button metal. 1921 A. A. Hopkins Sci. Amer. Handy Bk. Facts & Formulae 170 (table) White button metal. < as lemmas |
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