| 单词 | copper alloy |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔as〕An ancient Roman coin of copper or copper alloy.阿斯：古罗马一种铜硬币或铜合金硬币美国传统〔brass〕A bushing or similar lining for a bearing, made from a copper alloy.铜套或铜衬垫：用铜合金制的轴承轴瓦或套筒式衬垫美国传统〔copper〕A coin, usually of small denomination, made of copper or a copper alloy.铜币：用铜或铜的合金制成的硬币，通常为小面值美国传统〔patina〕A thin greenish layer, usually basic copper sulfate, that forms on copper or copper alloys, such as bronze, as a result of corrosion.铜绿锈：通常如碱性硫酸铜的一层浅绿色薄层，在铜或铜合金（如青铜）上形成，是由腐蚀引起的美国传统 |
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