Before we can assign a structural formula to a compound, we must first know its molecular formula.
在确定一个化合物的结构式之前，首先应知道它的分子式。
The polyurethane cross-linking agent has a structural formula (I) and can be used for preparing aquagel.
采用本发明的聚氨酯预聚体作为交联剂，通过常规自由基 溶液聚合就可制得水凝胶。
The polyurethane cross-linking agent has a structural formula (I) and can be used for preparing aquagel.
采用本发明的聚氨酯预聚体作为交联剂，通过常规自由基 溶液聚合就可制得水凝胶。
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