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关注：1
2013-05-23 12:21
求翻译：Drops of different concentrations of magnesium fertilizer, soil layer in the exchangeable magnesium content in horizontal direction is the trend of decreasing after increasing, have been a sharp drop in vertical direction and then slowly increase trend.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Drops of different concentrations of magnesium fertilizer, soil layer in the exchangeable magnesium content in horizontal direction is the trend of decreasing after increasing, have been a sharp drop in vertical direction and then slowly increase trend.
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