直接采用两支进口精密内径玻璃管吸附柱(标准壁玻璃管吸附柱不再配)，更方便用户使用。
In two imported directly by precision inner diameter glass tube adsorption column (standard wall glass tube adsorption column is no longer supported), more user-friendly.
直接采用两支进口精密内径玻璃管吸附柱(标准壁玻璃管吸附柱不再配)，更方便用户使用。
In two imported directly by precision inner diameter glass tube adsorption column (standard wall glass tube adsorption column is no longer supported), more user-friendly.
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