alkali degreater
......朋友不需要太多... Alkali 碱性，强碱 Alkali degreater 碱脱油剂 Alkali detergent 碱去垢剂 ...
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考察了精制溶剂组成、剂油比、精制温度、反应时间及静置时间对脱碱氮的影响。
The influences of different composition of refined solvent, ratio of reagent to oil, temperature and time of extraction, time of setting on removal of basic nitrogen compounds were studied.
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