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关注:1
2013-05-23 12:21
求翻译:For the second solution,extraction tests were carried out at a PH range of 4.20 -4.80 and phase ratio of 1.5/1 in order to reduce extraction stages.是什么意思?![]() ![]() For the second solution,extraction tests were carried out at a PH range of 4.20 -4.80 and phase ratio of 1.5/1 in order to reduce extraction stages.
问题补充: |
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