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langyouxia

木虫 (正式写手)

空白对照试试 如果没有问题 可能东西不纯?可核磁检测又是纯的,结合你前面改变流动相时,峰时大时小,可能是物质在你的这种流动相中不稳定,结构上稍有变化所致。

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31楼2016-07-08 10:51:50
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