- amine purification
- 胺: amine
- 精制: make with extra care; refine ...
- 精制: [工业] make with extra care; refine; purify; purification; refinement; refinishing; wrought◇精制机 refiner; 精制盐 purified salt
- 苯胺精炼物: aniline raffinate
- 双胺精染料: diaminogen dye
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