1) protraction facemask
前方牵引器
1.
Combined fixed appliance and protraction facemask to treat early permanent dentition Class Ⅲ malocclusion and close the extraction space.;
联合应用前方牵引器关闭拔牙间隙并矫治恒牙早期安氏Ⅲ类错
2.
A study of comparative effects on early permanent dentition Class Ⅲ malocclusion and closing extraction spaces of combined protraction facemask and sliding;
联合应用前方牵引器关闭拔牙间隙与滑动法关闭拔牙间隙矫治恒牙早期安氏Ⅲ类错的比较研究
2) Mandibular portraction application
下颌前方牵引器
3) Maxillary protraction
前方牵引
1.
Study of changes of hard tissues following application of combined rapid maxillary expansion (RME) and maxillary protraction therapy in skeletal class Ⅲ patients of different ages;
前方牵引联合快速扩弓矫治不同年龄骨性Ⅲ类错的硬组织变化
2.
Clinical analysis of treatment effects of sketetal permature classⅢ macclusion with rapid expansions and maxillary protraction;
前方牵引联合快速扩弓治疗早期骨性Ⅲ类错的临床研究
3.
Clinical study of changes in dentofacial morphology in skeletal class Ⅲ patients after pubertal growth by maxillary protraction;
上颌前方牵引治疗青少年骨性反的临床研究
4) protraction
[英][prə'trækʃən] [美][pro'trækʃən]
前方牵引
1.
Destoalveoler changers in skeletal Class III patients after maxillary protraction in the mixed dentition.;
前方牵引治疗替牙期骨性Ⅲ类错的牙颌结构变化研究
2.
Clinical Research on the Effect of Protraction Headgear Combined with Rapid Palatal Expansion in Correction of Skeletal Class Ⅲ Malocclusion;
前方牵引联合快速扩弓矫治骨性Ⅲ类错的临床研究
3.
Changes of jaw structure after maxillary protraction in patients with class Ⅲ skelecal malocclusion referring unilateral cleft lip and palate;
前方牵引对单侧完全性唇腭裂术后Ⅲ类骨性错患者牙颌结构的影响
5) protraction headgear
前牵引器
1.
In order to make sure the effects and soft and hard tissue profile change in the treatment of skeletal class Ⅲ malocclusion with modified protraction headgear and edgewise appliance, 23 patients were treated.
为了解改良长拉钩前牵引器与方丝弓矫治器联合矫治安氏Ⅲ类骨性错的疗效及对颅面生长的影响，对２３例用此法矫治的患者进行研究，结果发现平均治疗８个月后，前牙反解除，面型协调，颅面软硬组织头影测量研究发现：上颌骨向前向下移动，下颌骨向后向下旋转，前下面高增加，面凸角增大。
6) facial mask orthodontic distraction therapy
面具前方牵引矫治器
1.
Objective: To evaluate the treatment efficiency of facial mask orthodontic distraction therapy on children with skeletal cross bite of anterior tooth.
目的 :评估面具前方牵引矫治器在儿童骨性前牙矫治中的临床效果。
补充资料：牵引变压器
工频单相交流电力机车上用于改变电源电压的装置。牵引变压器的作用原理和普通变压器相同。牵引变压器中有：同高压接触网相接的绕组，称为原边绕组或高压绕组；向硅整流器或大功率晶闸管和牵引电动机供电的副边绕组，称为牵引绕组；向机车上各辅助电机供电或有其他特殊用途的绕组，称为辅助绕组。牵引变压器的工作条件特殊，如在运行中受到振动，空间尺寸和重量受到限制，当副边绕组发生短路故障时各绕组承受相当大的短路作用力。为了适应这些条件，牵引变压器要能承受较高的电磁负荷，要用油强迫循环冷却，它的零部件和支撑件要有足够的强度。利用牵引变压器调压可以调节机车运行速度。调压方式有高压侧调压和低压侧调压。近年来通常用晶闸管调压来代替牵引变压器调压。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条