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關注：1
2013-05-23 12:21
求翻譯：The sample is placed into a heated furnace, and a copper chill is used to freeze the metal directionally from the top towards the bottom.是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
The sample is placed into a heated furnace, and a copper chill is used to freeze the metal directionally from the top towards the bottom.
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