This device consists of silic gel column, activated charcoal column, flowmeter, conical flask, U-tube, nitrogen jar, air pump and the connected tubes.

  • 该提取装置简单,由硅胶柱、活性碳柱、流量计、锥形瓶、U形管、液罐及各种连接管构成,容易组装。

  • 互联网摘选 2025-02-23 18:36:42

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