It is proved that the impurity substance exists in the form of poly compound.
分析结果证明，海绵铁中的杂质以多元复合物的形式存在。
Rubber refining mill:The waist drum type roller is mainly used for stripping away impurity substance of reclaimed rubber.
精炼机：辊筒为腰鼓形，主要用于清除再生胶中的杂质。、。
Therefore, it is essential that the dosage-form manufacturer evaluate each supplier's drug substance impurity profiles.
因此，剂型生产商评估每个供应商原料药的杂质情况是相当重要的。
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