The root of the triad so if we haveC,E,G, C The lowest note of this aggregate of three is the root of the triad.
根音，如果是C，E，G组成的三和弦，就是根音，the，C，is，the，root，of，the，triad。,根音就是三个音中最低的音。
External references are restricted to one member of the AGGREGATE, designated as the root.
外部参考的汇总指定为根目录的其中一个成员的限制大小写。
Objective To observe short-term clinical effect of root perforation repair using mineral trioxide aggregate(MTA).
目的观察采用三氧化矿物凝聚体（MTA）修补根管穿孔的短期临床效果。
Objective To observe short-term clinical effect of root perforation repair using mineral trioxide aggregate(MTA).
目的观察采用三氧化矿物凝聚体（MTA）修补根管穿孔的短期临床效果。
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