Power supplies of electroplating should have good working stability and good controlling precision, short plating time and strong ability of perforation.
电镀电源要求电源的工作稳定性好、稳压稳流精度好、上镀时间快、穿孔能力强。
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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