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关注：1
2013-05-23 12:21
求翻译：Monomers, methyl methacrylate (MMA) and styrene, were obtained from Aldrich and were filtered through neutral alumina (70–230 mesh), fractionally distilled under reduced pressure, and redistilled under reduced pressure immediately before use是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Monomers, methyl methacrylate (MMA) and styrene, were obtained from Aldrich and were filtered through neutral alumina (70–230 mesh), fractionally distilled under reduced pressure, and redistilled under reduced pressure immediately before use
问题补充： |
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2013-05-23 12:21:38
正在翻译，请等待...
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2013-05-23 12:23:18
单体，甲醇异丁烯酸(MUTTAHIDA MAJLIS-E-AMAL)和苯乙烯，从奥尔德里奇得到了和过滤中性铝土(70-230滤网)，在减压下分数被蒸馏了，并且在用途前在减压下redistilled
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2013-05-23 12:24:58
单体，甲醇异丁烯酸 (MMA) 和苯乙烯，从Aldrich得到了和过滤通过中立铝土 (70-230滤网)，在减压下分数被蒸馏，并且在用途前在减压下redistilled
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2013-05-23 12:26:38
单体，甲基丙烯酸甲酯 (MMA) 和苯乙烯，从奥尔德里奇获得通过中性氧化铝 (70 — — 230 目) 过滤、 分数蒸馏水减少的压力下，和被立即使用前减少压力下 redistilled
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2013-05-23 12:28:18
单体，木精 methacrylate(MMA) 和 styrene，从 Aldrich 被获取和通过中性的氧化铝被过滤 (70-230 网格 )，部分地蒸馏在被减少的压力下，重新蒸馏在被减少的压力下以前立即使用
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