常见例句Keywords pentaerythritol;hetero diacetal;hetero diketal;monoacetal;monoketal;microwave irradiation; 季戊四醇;襍二縮醛;襍二縮酮;單縮醛;單縮酮;微波輻射;hetero diketal 襍二縮酮pentaerythritol diketal 季戊四醇雙縮酮 返回 diketal