牵引器

Objective To observe and evaluate the profile changes after maxillary protraction treatment for Class Ⅲ malocclusion.

目的 观察与评价上颌前方牵引矫治器矫治骨性Ⅲ类错后软组织侧貌的变化。

Vessels of Runabout size or above are fitted with more than one emitter - large starships having enough to ensure all-round coverage.

小型星舰或较大的星舰一般都配备一具或更多具的发射器，另外大型星舰都拥有能够全方位发射牵引光束的能力。

With many years' development, we have established advanced production and detection lines for direct-current traction electric motors, magnetic segregator and mining electric locomotives.

经过三十多年的发展，我厂现已拥有一条较先进的直流牵引电机，磁力分离器，工矿电机车的生产、检测流水线。

Precision-balanced tires will improve your car's traction and stability, and also give improved shock absorber action.

精确平衡的轮胎，将改善您的汽车的牵引与稳定，也使改善减振器的行动。

OA of supramaxillary bite plate and mandibular antedisplacement with class Ⅱ traction was a better new method to OSAS.

上颌牙合垫加Ⅱ类牵引下颌前移口腔矫治器是治疗OSAS的较好新方法。

Objective: To observe the efficacy of oral applianceof supramaxillary bite plate and mandibular antedisplacement with class Ⅱ traction to treat the obstructive sleep apnea syndrome.

目的：观察上颌牙合垫加Ⅱ类牵引下颌前移口腔矫治器治疗阻塞性睡眠呼吸暂停综合征的疗效。

Methods: Forty two patients were treated with OA of supramaxillary bite plate and mandibular antedisplacement with class Ⅱ traction. The rational symptom and polysomnogram were rechecked after three months.

使用上颌牙合垫加Ⅱ类牵引下颌前移口腔矫治器治疗阻塞性睡眠呼吸暂停综合征患者42例，3个月后复查主观症状、多导睡眠图。

According to the complicated condition of the 800 negative clinoform way of the Lujiatuo colliery, this paper selects the design of scheme of the wireway , analyses and calculates the tension of the drag-steel-rope and the load of the key part.

针对吕家坨煤矿井下800副山巷道复杂多变的情况，对架空乘人器设计进行方案选择，并根据基本技术参数，对其牵引钢丝绳各张力点以及关键件进行受力分析和计算，并介绍了设备安装及固定方法。

Objective To develop facility instrument for rapid tiny-hurt traction, reposition and fixation of fracture of zygomatic bone.

目的：研制一种便捷实用的颧骨颧弓骨折牵引复位固定器。

The cervical vertebra good recovery instrument is a medical instrument used for pulling,fixing and massaging the nape,It can prevent and treat various kinds of cervical vertebra diseases such as bone hyperplasia,fracture misplacement coxal projecting of the cervical vertebra.

&颈椎康复器&是一种用于颈部的牵引、外固定、按摩的医疗器械，适用于防治颈椎病、颈椎骨质增生、颈椎错位、颈椎间盘突出；还适用于因基底动脉不足引起的颈性头晕、晕厥等症状的治疗。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。