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关注：1
2013-05-23 12:21
求翻译：再用1：1的盐酸清洗二次，二氧化硅矿物铁含量已低于0.01%，可以看做纯二氧化硅，粒度分布在200-325目。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
再用1：1的盐酸清洗二次，二氧化硅矿物铁含量已低于0.01%，可以看做纯二氧化硅，粒度分布在200-325目。
问题补充： |
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2013-05-23 12:21:38
1:1 hydrochloric acid and then washed twice, silica mineral iron content is less than 0.01%, can be seen as pure silica, particle size distribution in the 200-325 mesh.
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2013-05-23 12:23:18
re-use of hydrochloric acid washing 2 1:1, 2 silica minerals iron content has been less than 0.01 per cent, can be seen as purely 2 silica, particle size distribution in 200 - 325.
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2013-05-23 12:24:58
Again uses 1:1 hydrochloric acid to clean two times, the silicon dioxide mineral iron content has been lower than 0.01%, may consider as the pure silicon dioxide, the grain-size distribution in 200-325 item.
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2013-05-23 12:26:38
Hydrochloric acid cleaning and 1:1 of the second, silica mineral iron content is less than 0.01%, can be seen as pure silicon dioxide, particle size distribution in 200-325.
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2013-05-23 12:28:18
Use hydrochloric acid for 1:1 wash two and then, two oxidize silicon mineral iron content already lower than 0.01%, can regard as and oxidize silicons two times purely, the granularity is distributed in 200-325 mesh.
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