Objective: Discussing the action depth of the high frequency electricity with different frequency on different tissues.
目的：探讨高频电不同频率对不同组织的作用深度。
Discusses the clinical curative effects of distal gingival flap of mandible vertical impacted wisdom teeth of high site by the high frequency electricity knife.
探讨高频电刀治疗下颌高位垂直阻生智齿远中龈瓣的临床疗效。
It is proved that, frequency conversion has excellent accent speed, a brake capability, high efficiency rate, great credit rate factor and joint electricity effect and other merits.
实践证明，变频调速具有优异的调速和起制动性能，以及高功率因素和高效率的节电能力等优点，而被国内外公认为最有发展前途的调速方式。
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