单词 | calcium cyanide |
例句 | DEFINITIVE EXAMPLES 权威例句〔cyanide process〕A process of extracting gold or silver from ores by treating them with a solution of sodium cyanide or calcium cyanide.氰化法:用氰化钠或者氰化钙的溶解从矿石中提取金或者银的过程美国传统 |
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