1. 精萃：四、引导组织再生术(GTR)治疗根分叉缺损我还要因本书日文版的出版而感谢东京精萃(Quintessence)出版公司总裁Ikk0 Sasaki先生. 感谢Hidetoshi Akimoto先生(Aki编辑公司)对绘图的编辑和临床照片以及图解所提供的有益建议.

2. 精华、精粹、实质：经营机制 operative mechanism | 精华、精粹、实质 quintessence | 举措 move

1. 典范;典型
    The quintessence of something is the most perfect or typical example of it.

    e.g. He was the quintessence of all that Eva most deeply loathed.
           他是伊娃最深恶痛绝的那种人中的典型。

2. 精髓;精华;本质
    The quintessence of something is the aspect of it which seems to represent its central nature.

    e.g. ...an old stone cottage, the quintessence of rural England.
           一座堪称英格兰乡村风格之典范的石砌农舍

1. the most typical example or representative of a type

2. the purest and most concentrated essence of something

3. the fifth and highest element after air and earth and fire and water
    was believed to be the substance composing all heavenly bodies

    Synonym: ether