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关注：1
2013-05-23 12:21
求翻译：The precipitate which formed was collected by centrifuation, suspended in petroleum ether, and the extraction and crystallization procedure was repeated twice.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
The precipitate which formed was collected by centrifuation, suspended in petroleum ether, and the extraction and crystallization procedure was repeated twice.
问题补充： |
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2013-05-23 12:21:38
从而形成的沉淀物是通过centrifuation收集，悬浮在石油醚，萃取和结晶过程重复两次。
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2013-05-23 12:23:18
正在翻译，请等待...
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2013-05-23 12:24:58
形成的沉淀物由centrifuation，暂停在石油醚和提取和结晶做法收集两次被重覆了得。
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2013-05-23 12:26:38
沉淀而形成由 centrifuation，悬浮在石油醚，收集和提取和结晶过程重复了两次。
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2013-05-23 12:28:18
形成被centrifuation 收集的沉淀物，悬浮在石油以太中，并且抽出和结晶程序被重复两次。
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