This is useful because the solvent will often evaporate before the final solvent front can be marked.

这个建议很有用，因为展开剂前沿的溶剂常在被标记前己挥发掉。

youdao

This is useful because the solvent will often evaporate before the final solvent front can be marked.

这个建议很有用，因为展开剂前沿的溶剂常在被标记前己挥发掉。

youdao