Abstract: Objective The aim of the study was to compare orthodontic traction of impacted teeth, using chain rubber ring or Ni-Ti wire respectively.
摘要］目的：研究比较应用链状皮圈或镍钛弓丝在埋伏牙的正畸牵引治疗中的临床效果。
Method to electrify-heat the Ni-Ti wire. with a heat Treat Device and two Pliers which connected to the Device, in order to bend and remold the Ni-Ti wire.
方法利用点焊-加热三用机的加热装置配合热处理钳等，对镍钛丝进行通电加热，从而达到弯制后定形的目的。
Objective: To discuss a method about shaping a dynamic and visualizational color stress cloud chart of finite element model of Ni-Ti arch wire for orthodontics.
目的：探讨形成镍钛弓丝有限元模型动态可视化应力云图的方法。
In this paper research results of the wire are presented and mechanisms of high toughness of b, Ti microalloyed submerged arc welding wire are analysed.
本文介绍了该焊丝的研究成果，分析了硼、钛微合金化埋弧焊丝高韧性机理。
In this paper research results of the wire are presented and mechanisms of high toughness of b, Ti microalloyed submerged arc welding wire are analysed.
本文介绍了该焊丝的研究成果，分析了硼、钛微合金化埋弧焊丝高韧性机理。
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