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1·Resinification of furfur al on the catalyst was the main cause of deactivation.

糠醛树脂化结焦是导致催化剂失活的主要原因。

2·Objective To study the possibility of using radiopaque resinifying agent in resinification of the tooth.

雍王嘉德目的为研究显影塑化剂在牙髓塑化治疗的显影效果。