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关注：1
2013-05-23 12:21
求翻译：最近几年，科研人员尝试了多种方法制备多孔pbi。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
最近几年，科研人员尝试了多种方法制备多孔pbi。
问题补充： |
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2013-05-23 12:21:38
In recent years, researchers have tried a variety of methods to prepare porous pbi.
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2013-05-23 12:23:18
In recent years, researchers have attempted to prepare more porous pbi approach.
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2013-05-23 12:24:58
Recently several years, the scientific researcher has attempted many kinds of method preparation porous pbi.
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2013-05-23 12:26:38
In recent years, researchers have tried a variety of methods of preparation of porous PBI.
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2013-05-23 12:28:18
正在翻译，请等待...
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